Estimate the product by rounding off the multiplier as direct

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Estimate the product by rounding off the multiplier as direct

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Sarah 4 weeks 2021-08-17T18:33:53+00:00 1 Answer 0 views 0

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    2021-08-17T18:35:25+00:00

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    To estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have. (This is somewhat of a crude method but serves as a starting point in learning estimation.)

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18:9+8+9*3-7:3-1*13 = ? ( )