Question

What is the smallest number than can be subtracted from 438 to make it

exactly divisible by 5? Give a reason for your answer.​

Answer 1

Any number divisible by 9 must have the sum of its digits divisible by 9. The sum of the digits of 456 is 15, so you need to subtract 6.

Answer 2

3

Explanation:

basically the largest number decided by 5 smaller than 438 is 435. so the answer is 3