What is 3 7/8 more than 8 5/6

Answer 1

Add them together. But first do an estimate. 3 7/8 is just under 4. 8 5/6 is just under 9. So their sum is just under 4 + 9 = 13.

8 5/6 + 3 7/8 = 8 + 3 + 5/6 + 7/8 = 11 + 5/6 + 7/8

To add 5/6 and 7/8, put them over a common denominator, which is 24:

11 + 20/24 + 21/24

11 + 41/24

11 + 24/24 + 17/24

11 + 1 + 17/24

12 17/24 (which is just under 13)