Adding and Subtracting Mixed Numbers

Front

Back

Front

Back

Front

6½ - 2⅔

Back

3
5/6

Front

Back

Front

Back

Front

Back

Front

Why can't we just add the numerators and denominators if we need to add two fractions with different denominators?

Back

Because the size of the pieces is different

Front

1 1/3 + 4 1/4

Back

5 7/12

Front

8 5/7 - 7 2/3 =

Back

1 1/21

Front

8 4/5 + 9 1/10

Back

17 9/10