Worksheet

Robot Lab Repairs: Power Up the Equations

Grade 3 practice finding the unknown number in multiplication and division equations, with shape symbols, fact triangles, and robot lab stories.

Grade 3MathInteractive · Printable

Aligned to3.OA.A.4

Play online Play as a game

PrintLetter-size worksheet Answer keyPrintable answers

Assign to classAssign to your classes, or get a join 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 3
Subject: Math
Question types: Fill in the blank, Multiple choice, Sorting, Short answer

About this worksheet

What students practice

Students find the unknown whole number in a multiplication or division equation shown with a symbol.
Students decide whether to multiply or divide to find an unknown number and check their answer.
Students use fact families to find a missing factor, product, or dividend.

How to use

Use after students know multiplication and division facts within 100. Remind them that each shape stands for one number, and have them check each answer by putting it back into the equation.

Curriculum

Common Core standard covered

3.OA.A.4

Find the unknown number in a multiplication or division equation.

Preview

OwlSheets.com

Name Date

Robot Lab Repairs: Power Up the Equations

Each shape hides one number. Find it to fix the robots.

Shape codes

Each shape stands for one missing number. Find the number that makes the equation true.

8 × □ = 56

□ =

△ ÷ 3 = 6

△ =

72 ÷ ○ = 9

○ =

54 = □ × 6

□ =

4 = △ ÷ 9

△ =

A fact triangle holds the three numbers of a fact family. The product is at the top, and the two factors are in the bottom corners. Find the missing number in each triangle.

Triangle A: top 36, corners 4 and
Triangle B: top , corners 5 and 7

Solve the first equation. Then use your answer to solve the second one.

□ × 3 = 24, so □ =
□ ÷ 2 = △, so △ =

Robot repairs

The robots made some mistakes. Help them fix their work.

Robot Zip tried to solve 48 ÷ □ = 6. Zip said □ = 42. How did Zip get 42?

A. Zip added 48 and 6.
B. Zip subtracted 6 from 48.
C. Zip multiplied 48 by 6.
D. Zip divided 48 by 6.

Fix Zip's answer. Find the number that really makes 48 ÷ □ = 6 true.

□ =

10.

How can you find each □? Sort the equations.

□ ÷ 6 = 57 × □ = 3548 ÷ □ = 8□ ÷ 4 = 10□ = 81 ÷ 93 × □ = 24□ ÷ 9 = 3

Multiply the two numbers you see	Divide one number you see by the other

11.

Robot Nova solved 9 × □ = 9. Nova said, "□ = 0, because 9 + 0 = 9." Explain why Nova is wrong. What is the real value of □?

Lab stories

Find the unknown number in each robot lab story.

12.

Robot Rex has 28 batteries. It puts them into packs of 4 batteries each. Which choice shows an equation for the story and the correct number of packs?