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Fitness Tracker: Signed Gaps

Practice subtracting rational numbers as adding opposites and finding distances using signed fitness tracker logs.

Grade 7MathInteractive · Printable

Aligned to7.NS.A.1.c

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 7
Subject: Math
Question types: Fill in the blank, Multiple choice, Short answer

About this worksheet

What students practice

Students rewrite subtraction of rational numbers as addition of the opposite.
Students find the distance between two rational numbers using the absolute value of their difference.
Students distinguish signed changes from distances in step and heart-rate logs.

How to use

Have students write an addition-of-the-opposite equation beside each subtraction. Review why a signed change can be negative but a distance cannot.

Curriculum

Common Core standard covered

7.NS.A.1.c

Understand subtracting as adding the opposite, and see the distance between two numbers as the absolute value of their difference.

Preview

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Name Date

Fitness Tracker: Signed Gaps

Use opposites and absolute values to compare step and heart-rate logs.

Subtract with Opposites

A step gap is steps logged minus the step goal. A heart-rate offset is heart rate minus a reference rate. Negative values mean below the goal or reference, not negative steps or heartbeats.

A tracker's step gap changes from −140 steps to 85 steps. Which expression rewrites the signed change, 85 − (−140), as addition?