What is the smallest number that must be added to 1,358 so that the result is exactly divisible by 11?

💡 Solution & Explanation

Divide 1,358 by 11: the quotient is 123 and the remainder is 5. To reach the next multiple of 11, add 11 − 5 = 6. Check: 1,358 + 6 = 1,364, which is 11 × 124. Note that 5 is the number to subtract, not add, to get a multiple of 11.