What is the smallest number that must be added to 920 so that the result is exactly divisible by 15?

💡 Solution & Explanation

Divide 920 by 15: the quotient is 61 and the remainder is 5. To reach the next multiple of 15, add 15 − 5 = 10. Check: 920 + 10 = 930, which is 15 × 62. Note that 5 is the number to subtract, not add, to get a multiple of 15.