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

I think 17 and over but I could be wrong because of creativity...

Which of the following numbers is the best compatible

cassmoney94

29.05.2020

The compatible numbers are 630 and 14. The quotient is about 92. The quotient is $92\frac{4}{7}$ .

Step-by-step 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

$\frac{648}{7}=\frac{630+14+4}{7}=90+2+\frac{4}{7}=92+\frac{4}{7}$

Therefore the compatible numbers are 630 and 14. The quotient is $92\frac{4}{7}$ .

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