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Earn +20 ptsQ: How can you use rounding to estimate 13 x 9?
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What is 65.48 - 9.3 estimate by rounding?
65 - 9 = 56
Estimate 5.12 plus 4.35 by first rounding to the nearest whole number?
It is 5 + 4 = 9.
Which numbers are best used to estimate the product of 13 and 31?
Their average is 22 and their difference is 9 so use 22 and 9 13*31 = 222 - 92 = 484 - 81 = 403
What is the estimate of 2 boxes that weigh 9.4 lb and 62.6 lb using rounding and compatible numbers?
9 + 63 = 72 lbs.
How do you estimate 117?
The front end estimate is 100. But estimating a single number, in isolation and without context, is a complete waste of time. If I had to add 117 to 1 trillion, I would estimate it as 0. If I had to add 117 to 0.0000000001, I would use the number as given - not use an estimate.Also, if I had to divided the number by 13 I would use 117 since 117/13 = 9 but if I had to divided it by 24 I might estimate it as 120 because 120/24 = 5.
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