Question

Which of the following Numbers is the best compatible number for estimating the quotient of 648 divided by 7?

Answer 1

Answer:92 4/7

Explanation:

Answer 2

The compatible numbers are 630 and 14. The quotient is about 92. The quotient is
`92(4)/(7)`.

Explanation:

The dividend is 648 and the divisor is 7.

The number 630 is a compatible number because product of 7 and 9 is 63.

So, 648 can be written as

`648=630+18`

The number 14 is a compatible number because product of 7 and 2 is 14. So, 648 can be written as

`648=630+14+4`

`(648)/(7)=(630+14+4)/(7)=90+2+(4)/(7)=92+(4)/(7)`

Therefore the compatible numbers are 630 and 14. The quotient is
`92(4)/(7)`.