Use equivalent fractions as a strategy to add and subtract fractions | Adding and subtracting fractions with different denominators, like 1/2 and 1/3. Students rewrite each fraction so both share the same denominator, then add or subtract the numerators. | 5.NF.A |
Add and subtract fractions with unlike denominators | Students add and subtract fractions that have different bottom numbers, like 1/2 + 1/3, by rewriting them so both fractions share the same bottom number first. This works with mixed numbers too, like 2 1/4 + 1 3/5. | 5.NF.A.1 |
Solve word problems involving addition and subtraction of fractions | Word problems ask students to add or subtract fractions with different denominators. Students find a common denominator, solve the problem, and check whether the answer makes sense. | 5.NF.A.2 |
Solve word problems involving addition and subtraction of fractions referring… | Students solve story problems that require adding or subtracting fractions with different bottom numbers, such as 1/2 plus 1/3. They use drawings or equations to find the answer and explain their work. | 5.NF.A.2.a |
Use benchmark fractions and number sense of fractions to estimate mentally and… | Students check whether a fraction answer makes sense by comparing it to familiar fractions like 1/2 or 1. If the answer seems too big or too small, they use that instinct to catch mistakes before moving on. | 5.NF.A.2.b |
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 dividing fractions in real situations. | 5.NF.B |
Interpret a fraction as division of the numerator by the denominator | When you divide 7 cookies among 3 people, the answer is 7/3. Students learn that fractions are just division in disguise, then solve word problems where sharing or splitting whole numbers gives a fraction or mixed number as the answer. | 5.NF.B.3 |
Apply and extend previous understandings of multiplication to multiply a… | Multiplying a fraction by another fraction or a whole number. Students find a part of a part, like figuring out what half of three-quarters actually is, and learn why the answer is often smaller than the numbers they started with. | 5.NF.B.4 |
| | Students learn to multiply a fraction by a whole number by splitting that whole number into equal parts and taking only some of them. For example, 2/3 times 6 means dividing 6 into 3 equal parts and keeping 2 of them. | 5.NF.B.4.a |
Construct a model to develop understanding of the concept of multiplying two… | Students build a drawing or diagram to show what happens when one fraction is multiplied by another, then write a short real-life story that matches the math. | 5.NF.B.4.b |
Find the area of a rectangle with fractional side lengths by tiling it with… | Students figure out the area of a rectangle that has fraction measurements on its sides, such as 2/3 by 3/4 of an inch. They use small fraction-sized squares to fill the rectangle and confirm that tiling gives the same answer as multiplying the two side lengths. | 5.NF.B.4.c |
Multiply fractional side lengths to find areas of rectangles | Students find the area of a rectangle by multiplying two fractional side lengths, such as 2/3 by 3/4. The rectangle itself shows why the multiplication works. | 5.NF.B.4.d |
Interpret multiplication as scaling | Multiplying by a fraction resizes a number the way zooming in or out changes a photo. Students figure out whether a product will be larger or smaller than the starting number before they calculate. | 5.NF.B.5 |
Comparing the size of a product to the size of one factor on the basis of the… | Students predict whether a multiplication answer will be bigger or smaller than the starting number by looking at the other factor, without doing the actual math. If you multiply by less than 1, the result shrinks; if you multiply by more than 1, it grows. | 5.NF.B.5.a |
Explaining why multiplying a given number by a fraction greater than 1 results… | Multiplying a number by a fraction bigger than 1 makes the result larger, not smaller. Students explain why that happens, connecting it to what they already know about multiplying by whole numbers. | 5.NF.B.5.b |
Explaining why multiplying a given number by a fraction less than 1 results in… | Students explain why multiplying a number by a fraction less than 1 makes the answer smaller than what you started with. For example, half of 8 is only 4, because you are taking a piece of the original, not the whole thing. | 5.NF.B.5.c |
Relating the principle of fraction equivalence a/b = | Multiplying a fraction by a whole number over itself (like 3/3) keeps the fraction's value the same. Students learn why 1/2 and 3/6 are equal: multiplying by a form of 1 changes the look, not the amount. | 5.NF.B.5.d |
Solve real-world problems involving multiplication of fractions and mixed… | Students multiply fractions and mixed numbers to solve real-life problems, like finding the area of a room or scaling a recipe. They may draw diagrams or write equations to show their thinking. | 5.NF.B.6 |
Apply and extend previous understandings of division to divide unit fractions… | Dividing a fraction like 1/2 by a whole number, or dividing a whole number by a fraction like 1/3. Students learn what happens when you split a fraction into equal groups or figure out how many fractions fit inside a whole number. | 5.NF.B.7 |
Interpret division of a unit fraction by a non-zero whole number | Dividing a fraction by a whole number means splitting it into even smaller pieces. Students figure out, for example, what 1/3 divided by 4 actually equals and calculate the answer. | 5.NF.B.7.a |
Interpret division of a whole number by a unit fraction | Dividing a whole number by a fraction (like 4 divided by 1/2) asks how many of those fraction-sized pieces fit into that whole number. Students solve these problems and explain what the answer means. | 5.NF.B.7.b |
Solve real-world problems involving division of unit fractions by non-zero… | Divide a fraction by a whole number (or a whole number by a fraction) to solve real problems, like splitting half a pizza among 3 people or figuring out how many quarter-cups fit in 2 cups. Students use drawings or equations to show their thinking. | 5.NF.B.7.c |