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Inverse Operations Practice

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Inverse Operations Practice

Use addition and subtraction, or multiplication and division, to undo an operation and check calculations. Show working where asked.

Find the missing number

Use the inverse operation to complete each equation.

1.26 + □ = 61

2.□ − 19 = 24

3.8 × □ = 56

4.□ ÷ 6 = 8

5.73 − □ = 38

6.Which number makes 9 × □ = 72 true?

Use inverse operations to check

Work out the check shown, then decide whether the original calculation is correct.

7.Hemi says 37 + 26 = 63. Check by calculating 63 − 26. What is the check result, and is Hemi correct?

8.A student writes 84 ÷ 7 = 11. Check by multiplying 11 × 7. Give the check result and say whether the division is correct.

9.Ana calculates 91 − 47 = 44. Use addition to check the subtraction. Is his answer correct?

True
False

Match each equation to its inverse

Choose the matching inverse equation from the right-hand column.

Solve the problems

Write an equation, use its inverse to solve or check, and show your working.

10.Tevita had some trading cards. She gave 18 to her cousin and has 35 left. How many cards did she have before giving any away?

11.A fruit grower packs 63 apples equally into boxes, with 7 apples in each box. How many boxes are needed? Write a division equation and check it using multiplication.

12.A number line shows a jump backwards from 46 to 31. How far is the jump? Write a subtraction equation and its inverse addition equation.