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MF.RN.7 Challenge MF-013-A12-V03

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

Screen for correct percent-change representations

Problem

A phone battery was at \(80\%\) in the morning and \(68\%\) by lunchtime. Evaluate every statement below as a description of the change.

A. The battery level decreased by \(12~\text{percentage}~\text{points}\).
B. The battery level decreased by \(15\%\).
C. The battery level decreased by \(12\%\).
D. The percent decrease can be written as \(12/80\).
E. \(68\) is \(85\%\) of \(80\).

Include every statement that is correct.

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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
Screen for correct percent-change representations