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3D-Printing Club: Production Checks

Solve multistep 3D-printing problems with signed numbers, fractions, and decimals, then check costs and production plans by estimating.

Grade 7MathInteractive · Printable

Aligned to7.EE.B.3

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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 solve multistep printing problems using positive and negative whole numbers, fractions, and decimals.
Students use estimates to check calculations and decide whether production plans are reasonable.

How to use

Have students show their operations on scratch paper. Ask them to estimate before calculating, then compare their exact results with their estimates.

Curriculum

Common Core standard covered

7.EE.B.3

Solve multistep real-life problems with positive and negative numbers as whole numbers, fractions, and decimals, and check by estimating.

Preview

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Name Date

3D-Printing Club: Production Checks

Solve multistep problems and use estimates to check your results.

Plan Materials and Time

Each problem describes a separate printing job. Show your operations. Write fractions in simplest form.

The club has 420 g of filament. Six model towers each use 38.5 g, and a test print uses another 24 g.

How much filament remains? g

The club's printing account starts with a balance of −$18.75. Four members each deposit $12.50. The club then pays $16.25 for replacement nozzles.

What is the final signed balance? $

A model part's length differs from its target by −3/4 mm. Each of three design changes increases its length by 1/8 mm. A negative difference means the part is too short.

What is the final signed difference from the target? mm

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