What is the smallest number that must be added to 7,228 so that the result is exactly divisible by 9?

💡 Solution & Explanation

Divide 7,228 by 9: the quotient is 803 and the remainder is 1. To reach the next multiple of 9, add 9 − 1 = 8. Check: 7,228 + 8 = 7,236, which is 9 × 804. Note that 1 is the number to subtract, not add, to get a multiple of 9.