Question

Mario ordered a pizza for dinner when it arrived, mario quickly ate 1/8 of the pizza. while mario went to go get napkins. his pet poodle ate 1/3

a.) write a numerical expression to show the fraction of the pizza that is left

Answer 1

1/8+1/3=](3)(1)+(1)(8)]/[(8)(3)]=13/24

Explanation:

Answer 2

The first thing to do is to make the denominators the same:
1 X 3 = 3. 8 X 3 = 24
1 X 8 = 8. 3 X 8 = 24

3/24 + 8/24 = 11/24

The whole pizza is 1. The one can be written as a fraction:
1/1

1 X 24 = 24

24/24 - 11/24 = 13/24

24/24 - (3/24 + 8/24) = 13/24