Inverse Operations Practice

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Date:

🔄 Part 1: Finding Missing Numbers

Use inverse operations to find the missing numbers:

1. 15 + _____ = 23

2. _____ - 8 = 12

3. 6 × _____ = 42

4. _____ ÷ 7 = 9

5. 34 - _____ = 17

✅ Part 2: Check Your Work

Use inverse operations to check if these calculations are correct. Write ✓ for correct or ✗ for incorrect:

6. 25 + 18 = 43 → Check: 43 - 18 = _____

Answer: _____ (✓ or ✗)

7. 72 ÷ 8 = 9 → Check: 9 × 8 = _____

Answer: _____ (✓ or ✗)

8. 56 - 29 = 27 → Check: 27 + 29 = _____

Answer: _____ (✓ or ✗)

9. 7 × 8 = 54 → Check: 54 ÷ 7 = _____

Answer: _____ (✓ or ✗)

🧠 Part 3: Problem Solving

10. Sarah had some marbles. She gave away 15 marbles and now has 28 marbles left. How many marbles did she start with? Show your working using inverse operations.

11. A box contains 48 chocolates arranged in equal rows. If there are 6 chocolates in each row, how many rows are there? Write the division and check your answer using multiplication.