Estimate a range for each sum.

Question

3.89 + 42.71 + 12.32

I don't understand what to do for "estimating a range".

Ms. Sue · Accepted Answer

The range is the numbers that the answer must fall between. 3.89 = about 4 42.71 = about 43 12.32 = about 12 Add those numbers in your head -- 59 The range must be 58 - 60

David · Answer

Thanks!!!

Ms. Sue · Answer

You're welcome.

Anonymous · Answer

35642÷65846

hannah · Answer

why do eskimos wash their clothes in tide? Don't understand what the answer is

Faith · Answer

First do front end estimation which is just adding the whole numbers. Round the decimals to either 0.50 or 1. Add it to your answer for the whole numbers. Last add it to the decimal answer and your range is going to be bweetn your whole number answer and your total answer you have for adding the decimals and whole numbers

Faith · Answer

How do you do pi and trigonometry?

boy · Answer

nope

Marek · Answer

what if you do all those steps but somehow it still wrong?

Clarice · Answer

Front end estimation will answer the question for you

From Google:
Front end estimation mostly produces a closer estimate of sums or differences than the answer produced by adding or subtracting rounded numbers.

How to estimate a sum by front end estimation:

Add the digits of the two highest place values
Insert zeros for the other place values

Example 1: 4496 + 3745 is estimated to be 8100 by front end estimation (i.e. 4400 + 3700).
Example 2: 4496 + 745 is estimated to be 5100 by front end estimation (i.e. 4400 + 700).

Matilde · Answer

Thankyou so much! I was stuck on that question.

anonymous · Answer

ma name is jeff

Bekfast · Answer

Thanks

Ponies · Answer

what on earth is this website even do

Your God · Answer

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