Question

How do you know the quotient of 639 / 6 is greater than 100 before you actually divide

Answer 1

Answer:

because since the question is 639 / 6

we immediately know that 600 / 6 is 100

639 / 6 = 106.5

Answer 2

Answer:

You just need a little conversion to get the answer.

$\frac{639}{6}=\frac{600}{6}+\frac{39}{6}\\ = 100+\frac{39}{6} >100$