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indira predicts that the actual difference of 19-7.82 will be greater than the estamate of19-8 =11. is indira correct? explain how indira might have arrived at that prediction without subtracting the actual
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May 12, 2015
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indira predicts that the actual difference of 19-7.82 will be greater than the estamate of19-8 =11. is indira correct? explain how indira might have arrived at that prediction without subtracting the actual numbers.
Mathematics
high-school
BinaryBurnie
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7.82 is a little less than 8 (it rounds to 8).
Therefore 19 - 7.82 will be a little more than 11
To be more accurate .82 is .18 away from 1
Therefore the exact answer would be 8.18
Lars Udengaard
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May 15, 2015
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