Question

if the number 583-437 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

Answer 1

sum the total digit=30.but 30 is not divisible by 9 . 30+6 is divisible by 9. so the smallest whole number fill the blank is 6.

Answer 2

We know that,
A number is divisible by 9 if the sum of the digits of the number are divisible by 9.

Now,
5+8+3+4+3+7 = 30

The nearest number of 30 divisible by 9 is 36

So,
36 - 30 = 6

Therefore, the smallest whole number in the place of the blank digit will be 6.