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Standard IV
Mathematics
Estimation of Products
Estimate each...
Question
Estimate each of the following products by rounding off the first number correct to nearest ten and the other number correct to nearest hundred.
87 × 307
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Solution
87 will be rounded to 90 when rounded to the nearest 10
307 will be rounded to 300 rounded to the nearest 100
87 × 307
≈
90 × 300 = 27,000
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