WorksheetPremium

Space Camp: Mission Resource Desk

Solve multistep ratio and percent problems involving space-camp supplies, discounts, tax, tips, commissions, interest, and percent error.

Grade 7MathInteractive · Printable

Aligned to7.RP.A.3

Buy this worksheet: $1.50

Or unlock every Premium worksheet with Premium

PrintUnlock to print

Answer keyUnlock to see answers

Assign to classUnlock to assign with a class code

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, Circle the answer, Short answer

About this worksheet

What students practice

Students solve multistep ratio and percent problems to evaluate mission resources.
Students calculate prices, tax, tips, commissions, and simple interest using the correct percent bases.
Students calculate percent error and explain why opposite estimation errors do not cancel.

How to use

Have students show their calculations beside each item. Afterward, discuss which quantity serves as the base for each percent and why that base can change between steps.

Curriculum

Common Core standard covered

7.RP.A.3

Solve multistep ratio and percent problems such as interest, tax, markups, discounts, tips, commissions, and percent error.

Preview

OwlSheets.com

Name Date

Space Camp: Mission Resource Desk

Use ratios and percents to check mission plans, purchases, and funding.

Mission Readiness

Use the simulation records to answer each question. Percent error is the absolute difference between an estimate and the actual value, divided by the actual value, times 100%.

The crew must complete all 100 checks in this mission checklist.

Mission Checklist
Check category	Checks required	Percent completed
Navigation	60	80%
Communication	40	65%

What percent of all required checks has the crew completed? %

A simulated habitat needs 45 liters of coolant mixed in a water-to-concentrate ratio of 7 : 2. The crew must also bring extra concentrate equal to 30% of the concentrate used in the mixture. The extra concentrate stays separate.

How many liters of concentrate must the crew bring altogether? liters

The simulator originally used 360 energy units per mission. The crew's goal is to use 15% fewer units than that. Its latest mission used 324 units. How many additional units must the crew save to reach its goal?