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 Calculations

Instructions: Calculate each problem carefully. Line up the decimal points and show your working.

1. 4,562.75 + 2,348.25 = __________
2. 8,124.6 - 1,875.4 = __________
3. 12,035.45 - 6,428.25 = __________
4. 9,856.75 + 2,143.25 = __________
5. 15,470.65 - 9,125.55 = __________

✓ Part 2: Checking with Inverse Operations

Instructions: Use inverse operations to check if these calculations are correct. Show your checking work.

6. Check: 7,320.8 - 3,165.4 = 4,155.4

Use addition to check: 3,165.4 + 4,155.4 = __________

Is the original answer correct?

Yes
No

7. Check: 14,672.45 - 8,395.26 = 6,277.19

Use addition to check: 8,395.26 + 6,277.19 = __________

Is the original answer correct?

Yes
No

8. Explain in your own words why we can use addition to check subtraction:

💷 Part 3: Money Problems

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

9. Sarah had £12,345.50 in her savings account. She withdrew £4,895.25 to buy a car. How much money does she have left?

Calculation: £12,345.50 - £4,895.25 = £__________

Check your answer: £4,895.25 + £__________ = £12,345.50

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

Calculation: £6,532.40 + £1,749.95 = £__________

Check your answer: £__________ - £1,749.95 = £6,532.40

11. A car repair costs £2,875.75 in total. If £1,450.50 has already been paid, how much is still owed?

Amount still owed: £__________

Check using inverse operation:

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