MathsFreePrintable

Adding and Subtracting Decimals

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Adding and Subtracting Decimals worksheet preview

Adding and Subtracting Decimals

Calculator and decimal numbers illustration

📊 Part 1: Decimal Addition and Subtraction

Instructions: Calculate each problem. Show your working and use inverse operations to check your answers.

1. 4,562.75 + 2,348.25 = ____________

Check using inverse operation: ________________

2. 8,124.60 - 1,875.40 = ____________

Check using inverse operation: ________________

3. 12,035.45 - 6,428.25 = ____________

Check using inverse operation: ________________

4. 9,856.75 + 2,143.25 = ____________

Check using inverse operation: ________________

💷 Part 2: Money Problems

Instructions: Solve these real-life money problems. Remember to check your answers using inverse operations.

5. Sarah had £12,345.50 in her savings account. She spent £4,895.25 on a holiday. How much money does she have left?

Answer: £ ____________

Check: ________________

6. A car repair cost £2,875.75. If £1,450.50 has already been paid, how much is still owed?

Answer: £ ____________

Check: ________________

7. Tom bought a laptop costing £1,749.95. After the purchase, he had £6,532.40 left in his account. How much money did he start with?

Answer: £ ____________

Check: ________________

🤔 Part 3: Understanding Inverse Operations

8. Explain in your own words what "inverse operations" means in mathematics.
9. Why is it important to check your answers using inverse operations? Give two reasons.
10. Which inverse operation would you use to check the answer to 15,470.65 - 9,125.55?

Subtract 9,125.55 from the answer

Add 9,125.55 to the answer

Divide the answer by 9,125.55

Multiply the answer by 9,125.55

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