3 years ago

Estimate the sum of 21+17.

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

8 0

40 Is The Sum Of 21+17.

sergejj [24]3 years ago

4 0

When estimating sums, you need to round to get to the answer.

So in the problem:

21+17 = ?

I round 21 to 20.

I round 17 to 20.

So know, the problem is:

20+20

The answer to 20 + 20 equals 40.

The answer is 40.

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