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MF.RN.7 Standard MF-013-A06-V04

Calculate percent increase and decrease and explain what the percent measures.

Compare percent changes across contexts

Problem

Water use changes as follows: Home A, \(200~\text{to}~170~\text{gallons}\); Home B, \(80~\text{to}~72\); Home C, \(150~\text{to}~180\). Give the largest-magnitude result, then the largest-decrease result.

Table comparing monthly water use for three homes. Home A changes from 200 to 170 gallons, Home B from 80 to 72 gallons, and Home C from 150 to 180 gallons. The original-gallons column is labeled as the base, and the note distinguishes comparing all magnitudes from comparing only decreases. Open full size
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Four variants of this problem type
Curriculum context
Standard
MF.RN.7
Category
Rational Numbers
Domain
Percents
Objective
Calculate percent increase and decrease and explain what the percent measures.
Problem type
Compare percent changes across contexts