Use equivalent fractions as a strategy to add and subtract fractions. 5.NF.1 Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.) Tasks 5.NF.1 Task 1: Is Tim Incorrect? 5.NF.1 Task 2: Show 2 ways 5.NF.1 Task 3: What Makes 1/5? 5.NF.1 Task 4: Find the Common Denominator

5.NF.2 Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2. Tasks 5.NF.2 Task 1:Baking Cookies 5.NF.2 Task 2: To Add or Not to Add? 5.NF.2 Task 3: How Much Wood? 5.NF.2 Task 4: How Much String?

## Number and Operations-Fractions

Use equivalent fractions as a strategy to add and subtract fractions.5.NF.1Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators.For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)Tasks5.NF.1 Task 1: Is Tim Incorrect?

5.NF.1 Task 2: Show 2 ways

5.NF.1 Task 3: What Makes 1/5?

5.NF.1 Task 4: Find the Common Denominator

5.NF.2Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers.For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.Tasks5.NF.2 Task 1:Baking Cookies

5.NF.2 Task 2: To Add or Not to Add?

5.NF.2 Task 3: How Much Wood?

5.NF.2 Task 4: How Much String?