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Summer Jobs: Follow the Cash

Model summer-job balances with signed number-line moves, identify opposite changes, and interpret sums involving earnings and expenses.

Grade 7MathInteractive · Printable

Aligned to7.NS.A.1.b

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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, Matching, Circle the answer, Short answer

About this worksheet

What students practice

Students model p + q by moving |q| units from p in the direction determined by the sign of q.
Students identify opposite signed amounts and explain why their sum is zero.
Students interpret rational-number sums as balances after summer-job earnings and expenses.

How to use

Have students trace each move on the number lines and label their own moves beside other items. Discuss what a zero balance does and does not mean.

Curriculum

Common Core standard covered

7.NS.A.1.b

Understand p + q as moving |q| from p on a number line, see that opposites add to 0, and interpret sums in context.

Preview

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Name Date

Summer Jobs: Follow the Cash

Model mowing and babysitting money with signed moves on a number line.

Read the Cash Paths

A job balance tracks money available after expenses. A negative balance means money is owed. Earnings are positive changes; expenses and refunds paid to customers are negative changes. Each number-line unit represents $1.

After Eli receives a mowing payment, his balance moves from −15 to 10 on the number line. Which addition models this move?