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Estimating and Rounding Numbers
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Estimating and Rounding Numbers
Round each number to the place value named. For estimation questions, show how you worked out your answer.
Rounding to the nearest ten
1.Round 63 to the nearest ten.
2.Round 178 to the nearest ten.
3.Which number rounds to 250 when rounded to the nearest ten?
- 244
- 246
- 243
- 256
4.Select every number that rounds to 680 when rounded to the nearest ten: 674, 675, 682, 686, 689.
5.On the number line, use the position of 367 to decide whether it is closer to 360 or 370. Then give 367 rounded to the nearest ten.
Rounding to larger place values
6.Round 6,348 to the nearest hundred.
7.Round 28,650 to the nearest thousand.
8.Which is 73,482 rounded to the nearest ten thousand?
- 70,000
- 73,000
- 74,000
- 80,000
9.True or false: 4,750 rounds to 4,800 when rounded to the nearest hundred. Explain your choice using the hundreds and tens digits.
10.Match each number to its value rounded to the nearest hundred.
- 2,149
- 2,251
- 5,849
- 5,950
- 2,300
- 6,000
- 5,800
- 2,100
Estimation in everyday situations
11.At a zoo, Charlie counts 286 visitors in the morning and 419 in the afternoon. Round each count to the nearest hundred, then estimate the total number of visitors.
12.Harper is preparing feed bags for 4 zoo enclosures. Each enclosure needs 197 bags. Round 197 to the nearest hundred, then use that rounded amount to estimate how many bags are needed altogether.
13.A zoo's annual report records 48,612 visits. Oliver says this is about 49,000 visits to the nearest thousand. Is his estimate correct? Explain.
14.A wildlife centre sells 1,238 tickets on Saturday and 1,764 on Sunday. Estimate the weekend total by rounding each number to the nearest thousand.
15.A zoo shop has 2,847 postcards in storage. Which is the best estimate to the nearest hundred?
- 2,800 postcards
- 2,850 postcards
- 2,900 postcards
- 3,000 postcards
3 printable pages
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