Question

What is the rounding or compatible numbers to estimate the sum of 87+34

Answer 1

87 + 34

87 rounded = 90

34 rounded = 35

90 + 35 = 125

or

87 rounded = 90

34 rounded = 30

90 + 30 = 120

when rounding you are only getting an estimate so it is not going to be exact however you do it.

Answer 2

Answer: sum = 1200.

Explanation:

Since we have two digits are numbers are given ,

So the only possible rounding or estimation will be done nearest to ones .

Rounding integers to nearest ones ,

`87\text{ changes to }90\\34\text{ changes to }30\\`

So,

Sum is given by

`90+30=1200`

So, our sum will be 1200.