5.NF. Grade 5 - Number and Operations---Fractions
5.NF.A. Use equivalent fractions as a strategy to add and subtract fractions.
5.NF.A.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, $a/b + c/d = (ad + bc)/bd$.)
5.NF.A.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 $3/7 < 1/2$.
- Connor and Makayla Discuss Multiplication
- Cornbread Fundraiser
- Cross Country Training
- Folding Strips of Paper
- Mrs. Gray's Homework Assignment
- Calculator Trouble
- Comparing a Number and a Product
- Comparing Heights of Buildings
- Grass Seedlings
- Reasoning about Multiplication
- Running a Mile
- Scaling Up and Down
- No tasks yet illustrate this standard.