Place value and decimals
Students read, write, and compare decimals out to the thousandths place. They learn how moving a digit one spot to the left makes it ten times bigger, and they practice multiplying and dividing by 10, 100, and 1,000.
This is the year math stretches into decimals and fractions as full working numbers. Students read and compare decimals to the thousandths place, then add, subtract, multiply, and divide them. They also multiply fractions by fractions and divide with unit fractions, picturing what the answers mean. By spring, students can find the volume of a box by multiplying length by width by height.
Students read, write, and compare decimals out to the thousandths place. They learn how moving a digit one spot to the left makes it ten times bigger, and they practice multiplying and dividing by 10, 100, and 1,000.
Students write and solve number sentences that use parentheses and brackets. They multiply large numbers using the standard method and divide with two-digit divisors, showing the work with arrays or area models.
Students add and subtract fractions and mixed numbers that have different bottom numbers, like 2/3 plus 1/4. They estimate first to check if an answer makes sense.
Students multiply a fraction by a whole number and a fraction by a fraction, often using rectangle drawings. They also divide whole numbers by unit fractions, such as figuring out how many quarter cups fit in three cups.
Students add, subtract, multiply, and divide decimals to the hundredths place, which shows up in money and measurement problems. They also convert between units like inches and feet or meters and centimeters.
Students find the volume of boxes by counting cubes and using length times width times height. They plot points on a coordinate grid and sort triangles and quadrilaterals by their sides and angles.
Students write and solve number sentences that show multi-step calculations, then explain in words what each expression means. Think of it as translating between math notation and plain English.
Students write math expressions using parentheses and brackets, then solve them in the right order. This covers two-step problems using addition, subtraction, multiplication, and division.
Students look at two number patterns side by side, find the rule behind each one, and describe how the two patterns relate to each other.
Students follow two different counting rules to build two number sequences at the same time, then record both in a table that shows how each input produces an output.
Students look at a table of paired numbers and figure out the rule connecting them, such as "multiply by 3" or "add 5." They use that rule to describe the relationship between each input and its matching output.
Students take a completed input/output table and turn each row into a coordinate pair like (3, 9). Those pairs are then ready to plot as points on a grid.
Students take a completed input/output table and plot each number pair as a point on a grid, matching the first number to the horizontal axis and the second to the vertical axis.
| Standard | Definition | Code |
|---|---|---|
| Write and interpret numerical expressions | Students write and solve number sentences that show multi-step calculations, then explain in words what each expression means. Think of it as translating between math notation and plain English. | 5.OA.A |
| Write, explain, and evaluate simple numerical expressions involving the four… | Students write math expressions using parentheses and brackets, then solve them in the right order. This covers two-step problems using addition, subtraction, multiplication, and division. | 5.OA.A.1 |
| Analyze patterns and relationships | Students look at two number patterns side by side, find the rule behind each one, and describe how the two patterns relate to each other. | 5.OA.B |
| Generate two numerical patterns using two given rules and complete an… | Students follow two different counting rules to build two number sequences at the same time, then record both in a table that shows how each input produces an output. | 5.OA.B.2 |
| Use data from an input/output table to identify apparent relationships between… | Students look at a table of paired numbers and figure out the rule connecting them, such as "multiply by 3" or "add 5." They use that rule to describe the relationship between each input and its matching output. | 5.OA.B.2.a |
| Form ordered pairs from values in an input/output table | Students take a completed input/output table and turn each row into a coordinate pair like (3, 9). Those pairs are then ready to plot as points on a grid. | 5.OA.B.2.b |
| Graph ordered pairs from an input/output table on a coordinate plane | Students take a completed input/output table and plot each number pair as a point on a grid, matching the first number to the horizontal axis and the second to the vertical axis. | 5.OA.B.2.c |
Students read, write, and compare numbers from billions down to thousandths, using their understanding of how each place is ten times the value of the place to its right.
Each digit in a number is worth ten times more than the same digit one place to its right. Students use models and reasoning to explain why 0.4 is ten times greater than 0.04, for example.
Multiplying by 10, 100, or 1,000 shifts digits to the left and adds zeros. Students explain why 4 x 100 equals 400, connecting that pattern to exponent notation like 10².
When you multiply or divide a decimal by 10, 100, or 1,000, the decimal point shifts left or right. Students explain why that shift happens and how far it moves depending on the power of 10 used.
Students read, write, and compare decimal numbers down to the thousandths place, like 3.047 or 0.625. They say which number is larger, smaller, or equal, and can show decimals in word form and expanded form.
Students read and write decimal numbers like 3.572 three ways: as a numeral, as words ("three and five hundred seventy-two thousandths"), and broken apart by place value (3 + 0.5 + 0.07 + 0.002).
Students line up two decimal numbers and decide which is larger, smaller, or equal by checking what each digit means in its place. They record the result using the symbols >, =, or <.
Students round decimal numbers to specific place values, stopping as far right as the thousandths place. They use the digit that follows the rounding place to decide whether to round up or keep the number the same.
Students add, subtract, multiply, and divide large whole numbers and decimals like $3.75 or 12.08. The work builds the arithmetic fluency students use whenever money, measurement, or data shows up in class.
Students multiply large whole numbers using the standard written method, lining up digits by place value and carrying as needed. This is the same paper-and-pencil multiplication most parents learned in school.
Students divide large numbers (up to four digits) by two-digit numbers, then show how they got the answer using a drawing, a grid, or an equation.
Students add, subtract, multiply, and divide decimal numbers like 3.75 or 12.40. They also explain why the steps they used actually work.
Students use drawings or physical objects to work through math problems that include cents, tenths, and hundredths. The goal is to show their thinking, not just write an answer.
Students solve everyday problems using decimal numbers, like calculating the cost of groceries or the distance of a race. Numbers can go two places past the decimal point, such as $4.75 or 10.36 miles.
| Standard | Definition | Code |
|---|---|---|
| Understand the place value system | Students read, write, and compare numbers from billions down to thousandths, using their understanding of how each place is ten times the value of the place to its right. | 5.NBT.A |
| Using models and quantitative reasoning, explain that in a multi-digit number… | Each digit in a number is worth ten times more than the same digit one place to its right. Students use models and reasoning to explain why 0.4 is ten times greater than 0.04, for example. | 5.NBT.A.3 |
| Explain patterns in the number of zeros of the product when multiplying a… | Multiplying by 10, 100, or 1,000 shifts digits to the left and adds zeros. Students explain why 4 x 100 equals 400, connecting that pattern to exponent notation like 10². | 5.NBT.A.3.a |
| Explain patterns in the placement of the decimal point when a decimal is… | When you multiply or divide a decimal by 10, 100, or 1,000, the decimal point shifts left or right. Students explain why that shift happens and how far it moves depending on the power of 10 used. | 5.NBT.A.3.b |
| Read, write, and compare decimals to thousandths | Students read, write, and compare decimal numbers down to the thousandths place, like 3.047 or 0.625. They say which number is larger, smaller, or equal, and can show decimals in word form and expanded form. | 5.NBT.A.4 |
| Read and write decimals to thousandths using base-ten numerals, number names | Students read and write decimal numbers like 3.572 three ways: as a numeral, as words ("three and five hundred seventy-two thousandths"), and broken apart by place value (3 + 0.5 + 0.07 + 0.002). | 5.NBT.A.4.a |
| Compare two decimals to thousandths based on the meaning of the digits in each… | Students line up two decimal numbers and decide which is larger, smaller, or equal by checking what each digit means in its place. They record the result using the symbols >, =, or <. | 5.NBT.A.4.b |
| Use place value understanding to round decimals to thousandths | Students round decimal numbers to specific place values, stopping as far right as the thousandths place. They use the digit that follows the rounding place to decide whether to round up or keep the number the same. | 5.NBT.A.5 |
| Perform operations with multi-digit whole numbers and decimals to hundredths | Students add, subtract, multiply, and divide large whole numbers and decimals like $3.75 or 12.08. The work builds the arithmetic fluency students use whenever money, measurement, or data shows up in class. | 5.NBT.B |
| Fluently multiply multi-digit whole numbers using the standard algorithm | Students multiply large whole numbers using the standard written method, lining up digits by place value and carrying as needed. This is the same paper-and-pencil multiplication most parents learned in school. | 5.NBT.B.6 |
| Use strategies based on place value, properties of operations, and/or the… | Students divide large numbers (up to four digits) by two-digit numbers, then show how they got the answer using a drawing, a grid, or an equation. | 5.NBT.B.7 |
| Add, subtract, multiply | Students add, subtract, multiply, and divide decimal numbers like 3.75 or 12.40. They also explain why the steps they used actually work. | 5.NBT.B.8 |
| Use concrete models and drawings to solve problems with decimals to hundredths | Students use drawings or physical objects to work through math problems that include cents, tenths, and hundredths. The goal is to show their thinking, not just write an answer. | 5.NBT.B.8.a |
| Solve problems in a real-world context with decimals to hundredths | Students solve everyday problems using decimal numbers, like calculating the cost of groceries or the distance of a race. Numbers can go two places past the decimal point, such as $4.75 or 10.36 miles. | 5.NBT.B.8.b |
Students add and subtract fractions by finding a common denominator first. Think of it as making sure both fractions use the same-size slices before combining them.
Students solve real-world problems that involve adding or subtracting fractions with different bottom numbers. They use drawings or equations to work through the problem, then check whether their answer makes sense using familiar fractions like 1/2 or 1/4.
Students add and subtract fractions that have different bottom numbers, like 1/2 + 1/3, by rewriting them so the bottom numbers match first. This builds on knowing how to find equal fractions.
Students use what they already know about multiplication and division to work with fractions, including multiplying a fraction by a whole number or another fraction and splitting a fraction into equal parts.
Students divide whole numbers and express the answer as a fraction or mixed number when it doesn't come out even. Think of splitting 7 sandwiches equally among 3 people and writing the share as 2 and 1/3.
A fraction is just a division problem in disguise. Students learn that 3/4 means 3 divided by 4, then use pictures or objects to show why that's true.
Students solve story problems where dividing two whole numbers gives an answer that is a fraction or mixed number. They show their thinking with a picture, diagram, or number sentence.
Multiplying a fraction by a whole number or by another fraction. Students learn that multiplying two fractions together gives a smaller piece of the whole, not a larger one.
Students draw a picture to show what it looks like to multiply a fraction by a whole number, then write a short real-world story that matches the math. For example, they might show three-fourths of 8 slices of pizza using a diagram.
Students draw a picture, grid, or number line to show what it looks like when two fractions are multiplied, then write a short real-world story that matches the math.
Students find the area of a rectangle by multiplying two fraction side lengths, such as 2/3 by 3/4. They also draw rectangles on a grid to show what a fraction multiplication problem looks like.
Students figure out the area of a rectangle whose sides are fractions by filling it with small equal squares, then confirm that multiplying the two side lengths gives the same answer.
Multiplying by a fraction makes a number smaller. Multiplying by a whole number greater than one makes it larger. Students learn to predict the size of a product before doing any calculation.
Multiplying a number by a fraction less than 1 makes the result smaller than the original. Multiplying by a fraction greater than 1 makes it larger. Students figure this out by looking at the fraction, not by doing the math.
Students explain why multiplying by a fraction bigger than 1 makes the answer larger than the starting number, the same way multiplying 6 by 3/2 gives you more than 6.
Multiplying a number by a fraction smaller than 1 shrinks it. Students explain why that happens and connect the idea to equivalent fractions.
Students solve everyday problems that involve multiplying fractions and mixed numbers, like scaling a recipe or finding the area of a room. They use drawings or equations to show their thinking.
Students divide a simple fraction (like 1/4) by a whole number, and divide a whole number by a simple fraction. Both types of problems build toward reasoning about how many pieces fit into a given amount.
Students divide fractions by whole numbers and whole numbers by fractions to solve real-world problems. They draw pictures or diagrams to show how the math works.
Students write a short story that shows a unit fraction being split into equal groups, such as dividing one-third of a pizza among four people. Then they draw a picture to show what each share looks like.
Students write a short word problem for dividing a whole number by a simple fraction, such as "How many quarter-cups fit in 3 cups?" Then they draw a picture to show the answer.
| Standard | Definition | Code |
|---|---|---|
| Use equivalent fractions as a strategy to add and subtract fractions | Students add and subtract fractions by finding a common denominator first. Think of it as making sure both fractions use the same-size slices before combining them. | 5.NF.A |
| Model and solve real-word problems involving addition and subtraction of… | Students solve real-world problems that involve adding or subtracting fractions with different bottom numbers. They use drawings or equations to work through the problem, then check whether their answer makes sense using familiar fractions like 1/2 or 1/4. | 5.NF.A.9 |
| Add and subtract fractions and mixed numbers with unlike denominators, using… | Students add and subtract fractions that have different bottom numbers, like 1/2 + 1/3, by rewriting them so the bottom numbers match first. This builds on knowing how to find equal fractions. | 5.NF.A.10 |
| Apply and extend previous understandings of multiplication and division to… | Students use what they already know about multiplication and division to work with fractions, including multiplying a fraction by a whole number or another fraction and splitting a fraction into equal parts. | 5.NF.B |
| Solve word problems involving division of whole numbers leading to answers in… | Students divide whole numbers and express the answer as a fraction or mixed number when it doesn't come out even. Think of splitting 7 sandwiches equally among 3 people and writing the share as 2 and 1/3. | 5.NF.B.11 |
| Model and interpret a fraction as division of the numerator by the denominator | A fraction is just a division problem in disguise. Students learn that 3/4 means 3 divided by 4, then use pictures or objects to show why that's true. | 5.NF.B.11.a |
| Use visual fraction models, drawings | Students solve story problems where dividing two whole numbers gives an answer that is a fraction or mixed number. They show their thinking with a picture, diagram, or number sentence. | 5.NF.B.11.b |
| Apply and extend previous understandings of multiplication to find the product… | Multiplying a fraction by a whole number or by another fraction. Students learn that multiplying two fractions together gives a smaller piece of the whole, not a larger one. | 5.NF.B.12 |
| Use a visual fraction model | Students draw a picture to show what it looks like to multiply a fraction by a whole number, then write a short real-world story that matches the math. For example, they might show three-fourths of 8 slices of pizza using a diagram. | 5.NF.B.12.a |
| Use a visual fraction model | Students draw a picture, grid, or number line to show what it looks like when two fractions are multiplied, then write a short real-world story that matches the math. | 5.NF.B.12.b |
| Multiply fractional side lengths to find areas of rectangles | Students find the area of a rectangle by multiplying two fraction side lengths, such as 2/3 by 3/4. They also draw rectangles on a grid to show what a fraction multiplication problem looks like. | 5.NF.B.12.c |
| Find the area of a rectangle with fractional side lengths by tiling it with… | Students figure out the area of a rectangle whose sides are fractions by filling it with small equal squares, then confirm that multiplying the two side lengths gives the same answer. | 5.NF.B.12.d |
| Interpret multiplication as scaling | Multiplying by a fraction makes a number smaller. Multiplying by a whole number greater than one makes it larger. Students learn to predict the size of a product before doing any calculation. | 5.NF.B.13 |
| Compare the size of a product to the size of one factor on the basis of the… | Multiplying a number by a fraction less than 1 makes the result smaller than the original. Multiplying by a fraction greater than 1 makes it larger. Students figure this out by looking at the fraction, not by doing the math. | 5.NF.B.13.a |
| Explain why multiplying a given number by a fraction greater than 1 results in… | Students explain why multiplying by a fraction bigger than 1 makes the answer larger than the starting number, the same way multiplying 6 by 3/2 gives you more than 6. | 5.NF.B.13.b |
| Explain why multiplying a given number by a fraction less than 1 results in a… | Multiplying a number by a fraction smaller than 1 shrinks it. Students explain why that happens and connect the idea to equivalent fractions. | 5.NF.B.13.c |
| Model and solve real-world problems involving multiplication of fractions and… | Students solve everyday problems that involve multiplying fractions and mixed numbers, like scaling a recipe or finding the area of a room. They use drawings or equations to show their thinking. | 5.NF.B.14 |
| Apply and extend previous understandings of division to divide unit fractions… | Students divide a simple fraction (like 1/4) by a whole number, and divide a whole number by a simple fraction. Both types of problems build toward reasoning about how many pieces fit into a given amount. | 5.NF.B.15 |
| Solve real-world problems involving division of unit fractions by non-zero… | Students divide fractions by whole numbers and whole numbers by fractions to solve real-world problems. They draw pictures or diagrams to show how the math works. | 5.NF.B.15.a |
| Create a story context for a unit fraction divided by a whole number | Students write a short story that shows a unit fraction being split into equal groups, such as dividing one-third of a pizza among four people. Then they draw a picture to show what each share looks like. | 5.NF.B.15.b |
| Create a story context for a whole number divided by a unit fraction | Students write a short word problem for dividing a whole number by a simple fraction, such as "How many quarter-cups fit in 3 cups?" Then they draw a picture to show the answer. | 5.NF.B.15.c |
Students read and build graphs, tables, and line plots using real data. They answer questions about what the data shows and explain what patterns they notice.
Students collect measurements in fractions, like half or quarter inches, then plot each one as a dot on a number line to see how the data is spread out.
Students read a line plot and use the fraction values marked on it to answer questions, such as finding a total, a difference, or an average. The math involves adding, subtracting, multiplying, or dividing those fractions.
| Standard | Definition | Code |
|---|---|---|
| Represent and interpret data | Students read and build graphs, tables, and line plots using real data. They answer questions about what the data shows and explain what patterns they notice. | 5.DA.A |
| Make a line plot to display a data set of measurements in fractions of a unit | Students collect measurements in fractions, like half or quarter inches, then plot each one as a dot on a number line to see how the data is spread out. | 5.DA.A.16 |
| Add, subtract, multiply | Students read a line plot and use the fraction values marked on it to answer questions, such as finding a total, a difference, or an average. The math involves adding, subtracting, multiplying, or dividing those fractions. | 5.DA.A.16.a |
Students practice switching between units in the same system, like converting inches to feet or grams to kilograms, using multiplication or division.
Students convert between units in the same system, like inches to feet or ounces to pounds, then use those conversions to solve real problems that take more than one step to work out.
Students learn what volume means and practice finding it by multiplying or adding. Think of counting how many small cubes fill a box.
Students learn that volume measures how much space a solid shape takes up. They find volume by counting how many small cubes fit inside a box or other 3-D shape, using cubes measured in inches, centimeters, or feet.
Students fill a box-shaped object with small cubes, fitting them edge to edge with no gaps, then count the cubes to find the volume.
Finding the volume of a box means multiplying its length, width, and height. Students use that connection to solve real problems, like figuring out how many unit cubes fill a shape or combining the volumes of two connected solids.
Students find the volume of a box by multiplying its three side lengths together. They also see that multiplying the base area by the height gives the same answer, connecting the formula to the idea of stacking layers of unit cubes inside the box.
Students use two volume formulas to find how much space fits inside a box-shaped object. They practice with whole-number side lengths and apply the math to real problems, like figuring out how many unit cubes fill a storage container.
Students find the volume of an L-shaped or step-shaped solid by splitting it into two box-shaped pieces, calculating each piece separately, then adding the two totals together.
| Standard | Definition | Code |
|---|---|---|
| Convert like measurement units within a given measurement system | Students practice switching between units in the same system, like converting inches to feet or grams to kilograms, using multiplication or division. | 5.M.A |
| Convert among different-sized standard measurement units within a given… | Students convert between units in the same system, like inches to feet or ounces to pounds, then use those conversions to solve real problems that take more than one step to work out. | 5.M.A.17 |
| Geometric measurement | Students learn what volume means and practice finding it by multiplying or adding. Think of counting how many small cubes fill a box. | 5.M.B |
| Identify volume as an attribute of solid figures | Students learn that volume measures how much space a solid shape takes up. They find volume by counting how many small cubes fit inside a box or other 3-D shape, using cubes measured in inches, centimeters, or feet. | 5.M.B.18 |
| Pack a solid figure without gaps or overlaps using <em>n</em> unit cubes to… | Students fill a box-shaped object with small cubes, fitting them edge to edge with no gaps, then count the cubes to find the volume. | 5.M.B.18.a |
| Relate volume to the operations of multiplication and addition | Finding the volume of a box means multiplying its length, width, and height. Students use that connection to solve real problems, like figuring out how many unit cubes fill a shape or combining the volumes of two connected solids. | 5.M.B.19 |
| Use the associative property of multiplication to find the volume of a right… | Students find the volume of a box by multiplying its three side lengths together. They also see that multiplying the base area by the height gives the same answer, connecting the formula to the idea of stacking layers of unit cubes inside the box. | 5.M.B.19.a |
| Apply the formulas <em>V = l × w × h</em> and <em>V = B × h</em> for… | Students use two volume formulas to find how much space fits inside a box-shaped object. They practice with whole-number side lengths and apply the math to real problems, like figuring out how many unit cubes fill a storage container. | 5.M.B.19.b |
| Find volumes of solid figures composed of two non-overlapping right rectangular… | Students find the volume of an L-shaped or step-shaped solid by splitting it into two box-shaped pieces, calculating each piece separately, then adding the two totals together. | 5.M.B.19.c |
Students plot and read points on a grid using two numbers, one for left-right and one for up-down. They use those points to solve real problems, like mapping a path or finding a distance.
Students plot points on a grid using two numbers, like (3, 5), and use those points to map out real situations. They also read a point on the grid and explain what the two numbers mean in context.
Students sort flat shapes into groups by their properties, like the number of sides, angle sizes, or whether sides are parallel. A square, for example, fits inside the category of rectangles because it shares the same properties.
Students sort triangles by their sides and angles, deciding whether each side matches another and whether each corner is sharp, wide, or square. It is the geometry behind why a yield sign and a roof pitch look so different.
Quadrilaterals like squares, rectangles, and rhombuses share overlapping properties, so one shape can belong to several categories at once. Students sort these four-sided shapes into groups based on side lengths, angles, and parallel sides.
Shapes inherit the rules of their category. If all rectangles have four right angles, then squares do too, because squares are a type of rectangle.
| Standard | Definition | Code |
|---|---|---|
| Graph points on the coordinate plane to solve real-world and mathematical… | Students plot and read points on a grid using two numbers, one for left-right and one for up-down. They use those points to solve real problems, like mapping a path or finding a distance. | 5.G.A |
| Graph points in the first quadrant of the coordinate plane | Students plot points on a grid using two numbers, like (3, 5), and use those points to map out real situations. They also read a point on the grid and explain what the two numbers mean in context. | 5.G.A.20 |
| Classify two-dimensional figures into categories based on their properties | Students sort flat shapes into groups by their properties, like the number of sides, angle sizes, or whether sides are parallel. A square, for example, fits inside the category of rectangles because it shares the same properties. | 5.G.B |
| Classify triangles according to side length | Students sort triangles by their sides and angles, deciding whether each side matches another and whether each corner is sharp, wide, or square. It is the geometry behind why a yield sign and a roof pitch look so different. | 5.G.B.21 |
| Classify quadrilaterals in a hierarchy based on properties | Quadrilaterals like squares, rectangles, and rhombuses share overlapping properties, so one shape can belong to several categories at once. Students sort these four-sided shapes into groups based on side lengths, angles, and parallel sides. | 5.G.B.22 |
| Explain that attributes belonging to a category of two-dimensional figures also… | Shapes inherit the rules of their category. If all rectangles have four right angles, then squares do too, because squares are a type of rectangle. | 5.G.B.23 |
The big focus is decimals and fractions. Students learn to add, subtract, multiply, and divide decimals, work with fractions that have different denominators, and multiply and divide fractions in real situations. They also start graphing points and finding the volume of boxes.
Cook together. Measuring cups turn fractions into something students can see and touch. Ask questions like how many quarter cups fit in a cup, or what one and a half cups plus three quarter cups adds up to. Five minutes of this beats a worksheet.
Use money and a ruler. Coins make tenths and hundredths real, and a ruler shows what a thousandth of a meter looks like next to a centimeter. Ask which is bigger, 0.4 or 0.38, and have them explain why using place value.
Many teachers start with place value and decimal operations in the fall, move to fraction operations through the winter, and save volume, the coordinate plane, and shape classification for spring. Fraction multiplication and division usually needs the most time, so plan a longer unit there.
Dividing a whole number by a unit fraction and dividing a unit fraction by a whole number trip students up every year. Decimal place value with multiplying and dividing by powers of ten is the other one. Build in extra practice with visual models before moving to rules.
Yes. Students are expected to multiply large numbers using the standard algorithm and divide four-digit numbers by two-digit numbers. Shaky facts make this slow and frustrating. Five minutes of fact practice a few times a week keeps things moving.
By spring, students should add, subtract, multiply, and divide fractions and decimals with confidence, explain why a digit in one place is ten times the digit to its right, find the volume of a box, and plot points on a grid. Word problems should not stop them cold.
A line plot is a simple graph that shows measurements above a number line, often in halves, fourths, or eighths. Students use it to organize data and then add or subtract the fractions shown. It connects fractions to real measuring, which makes both stick better.
Find a tissue box or cereal box and have students measure the length, width, and height with a ruler, then multiply the three numbers. That is the volume in cubic inches or cubic centimeters. Stacking small blocks or sugar cubes inside makes it concrete.