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1. |
Which choice uses rounded numbers to get an estimate? 
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A. |
16 + 8 = 24 |
B. |
16 − 8 = 8 |
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C. |
17 + 8 = 25 |
D. |
17 − 8 = 9 |
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Hint |
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2. |
Which choice uses rounded numbers to get an estimate? 212 + 769 |
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A. |
800 − 200 = 600 |
B. |
2 + 8 = 10 |
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C. |
200 + 700 = 900 |
D. |
200 + 800 = 1,000 |
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Hint |
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3. |
Which choice uses rounded numbers to get an estimate? 53.95 − 29.72 |
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A. |
60 − 30 = 30 |
B. |
54 + 30 = 84 |
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C. |
5 − 3 = 2 |
D. |
54 − 30 = 24 |
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Hint |
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4. |
Which choice uses rounded numbers to get an estimate? 4,478 + 232 |
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A. |
4,500 + 200 = 4,700 |
B. |
45 − 23 = 22 |
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C. |
4,500 − 200 = 4,300 |
D. |
4,400 + 200 = 4,600 |
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Hint |
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5. |
A field of corn is 28,495 inches long. A field of wheat is 19,648 inches long. About how much longer is the field of corn? |
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A. |
about 11,000 in. |
B. |
about 10,000 in. |
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C. |
about 9,000 in. |
D. |
about 7,000 in. |
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Hint |
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