Question

Benchmarks to estimate 2.81+3.72=

Answer 1

2.81+3.72=6.53 which you could estimate to 6.50 or 6.5

Answer 2

7

Explanation:

Given : Numbers : 2.81 and 3.72

To Find : to estimate 2.81+3.72

Solution :

If the value after decimal is 5 or more than round off it to successive whole number other wise round off it to preceding whole number

So, estimate of 2.81 is 3

Estimate of 3.72 = 4

Now
`=3+4`

`=7`

Hence
`2.81+3.72=7`