Rounding and Estimation Practice Hiranga T3W4

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Part 1: Choose the Best Estimate

Circle the most sensible answer. Think about the level of precision needed.

1. Round 4,768 to the nearest hundred.

4,700

4,800

5,000

2. Which is the best estimate for $19.85 + $7.12?

$20

$27

$40

3. A trip is 247 km long. To the nearest 10 km, this is:

240 km

250 km

300 km

4. A recipe needs 398 g of flour. Which amount is a useful estimate?

40 g

400 g

4,000 g

Show your working. Explain how rounding helps you decide whether an answer is reasonable.

5. Round 63,492 to the nearest thousand.

6. Estimate 297 × 6 by rounding 297 to the nearest hundred.

7. Estimate 846 ÷ 9 by rounding 846 to the nearest hundred. Write an approximate answer.

8. A family buys 4 tickets at $18.75 each. Estimate the total cost by rounding the ticket price to the nearest dollar.

9. A calculator gives 3,980 as the answer to 402 × 10. Is this reasonable? Explain why.

10. The temperature was 17.6°C in the morning and 23.2°C in the afternoon. Estimate the increase to the nearest degree.