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3 years ago

Estimate 1.75 x 12.5

Mathematics

2 answers:

Semmy [17]3 years ago

5 0

My estimate would be at least 21. if not that than 22.

igor_vitrenko [27]3 years ago

4 0

That means don't use a calculator.

2 * 12.5 = 25 about or you could use 2 * 13 = 26. Now you can use a calculator to see how close you were.

1.75 * 12.5 = 21.875

You may dismayed that you are not any closer, but the idea is to get a close answer without using a calculator. You are actually looking for a range of numbers that could contain the answer.

If you want the lower part of the range you could round to 1*12.5 = 12.5

So if you get an answer like 3.8 or 400 you know you did something wrong. Learning to estimate is a gift you should take out of every math or science class. It is a give freely given.

Estimate: betwee 12.5 and 25

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