What is 5 multiplied by 99?

Answer 1

5 * 99 = 495

You could break 99 up into smaller pieces, and find the answer by multiplying each of those pieces by 5:

5 * 9 + 5 * 25 + 5 * 25 + 5 * 20 + 5 * 20 = 495

You can do this since ab + ac = a(b + c).