SOLUTION: obtain an estimate for each computation by rounding the numbers so that the resulting arithmetic can easily be performed by hand or in your head. Then use a calculator to perform t

Question 187510: obtain an estimate for each computation by rounding the numbers so that the resulting arithmetic can easily be performed by hand or in your head. Then use a calculator to perform the computation. How reasonable is your estimate when compared to the actual answer?
0.67 X 211
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
0.67 X 211
estimate: .7*200=140
actual: .67*211=141.37
140/141.37=.99 or within 99% of the actual answer.
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