Problem preview

MF.RN.2 Challenge MF-008-A13-V04

Add and subtract fractions and mixed numbers with appropriate common denominators.

Choose the right fraction-operation strategy

Problem

Mina walked \(4~1/5~\text{miles}\) in the morning and \(2~7/10~\text{miles}\) in the afternoon. Calculate the total distance after determining the valid first step: A rewrites \(1/5\) as \(2/10\); B subtracts \(1/5\) from \(7/10\) before adding the whole numbers; C rewrites both mixed numbers with denominator \(15\).

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Choose Option C; the total distance is 6 8/15 miles.

Choose Option A; the total distance is 6 9/10 miles.

Choose Option B; the total distance is 6 1/2 miles.

Choose Option A; the total distance is 7 9/10 miles.

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Curriculum context

Course: Math Foundations
Standard: MF.RN.2
Category: Rational Numbers
Domain: Fractions
Objective: Add and subtract fractions and mixed numbers with appropriate common denominators.
Problem type: Choose the right fraction-operation strategy