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.

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?

A. 28 ÷ 4 = □, so □ = 6B. 4 + □ = 28, so □ = 24C. □ × 4 = 28, so □ = 7D. □ ÷ 4 = 28, so □ = 7

13.

Robot Dot rolls forward 6 inches with each step. Dot rolls 54 inches in all.
6 × □ = 54

Dot takes steps.

14.

A box of screws is shared equally among 7 robot kits. Each kit gets 6 screws. How many screws were in the box?
□ ÷ 7 = 6

There were screws in the box.