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Decimal Operations Practice

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Decimal Operations Practice worksheet preview

Decimal Operations Practice

Decimal operations illustration

📊 Part 1: Estimation and Calculation

1. First estimate, then calculate using the vertical column method:

a) 12.456 + 7.89

Estimate: _______ + _______ = _______

b) 35.27 - 18.145

Estimate: _______ - _______ = _______

2. Multiply these decimals by whole numbers. Estimate first:

a) 4.75 × 6

Estimate: _______ × _______ = _______

b) 3.125 × 8

Estimate: _______ × _______ = _______

💰 Part 2: Word Problems

3. Sarah buys 3 chocolate bars at $2.85 each and 2 drinks at $1.75 each. How much does she spend in total?

Write your equation: _________________________________

Answer: $__________

4. A recipe calls for 2.375 litres of milk. If Tom wants to make 4 times the recipe, how much milk does he need?

Write your equation: _________________________________

Answer: __________ litres

5. Emma ran 5.75 kilometres on Monday and 3.825 kilometres on Tuesday. How much further did she run on Monday than Tuesday?

Write your equation: _________________________________

Answer: __________ kilometres

🚀 Part 3: Challenge Questions

6. Calculate and round your answer to two decimal places:

a) 15.678 + 9.234 + 7.89 = __________ (rounded: __________)

b) 6.125 × 7 = __________ (rounded: __________)

7. Which calculation gives the largest result? Show your working.

4.25 × 6

12.8 + 14.75

35.6 - 8.125

8. A shop sells fabric for $12.75 per metre. If Mrs. Chen buys 2.5 metres, estimate how much change she will receive from $50.

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