BHS Math Guide

5th grade example

Jog-A-Thon task ( Illustrative Mathematics )

Alex is training for his school's Jog-A-Thon and needs to run at least 1 mile per day. If Alex runs to his grandma's house, which is 5/8 of a mile away, and then to his friend Justin's house, which is 1/2 of a mile away, will he have trained enough for the day?

Standards Alignment: DOMAIN: Number & Operations - Fractions CLUSTER 5.NF.A: Use equivalent fractions as a strategy to add and subtract fractions. STANDARD 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.) ASPECT OF RIGOR: Procedural