Adding Fractions with Unlike Denominators

Front

Back

1

Front

Back

5/6

Front

Back

7/8

Front

Common denominator for fractions 2/3 and 3/4? Options: 3, 4, 7, 12

Back

12

Front

Common denominator for 1/5 and 5/6? Options: 30, 11, 6, 5

Back

30

Front

Common denominator for fractions 3/10 and 1/5?

Back

10

Front

Which of these numbers could NOT be a common denominator for these three fractions? 1/3, 2/5, 3/10. Options: 15, 30, 60, 90

Back

15

Front

Which of these numbers could NOT be a common denominator for these two fractions?
1/6   and   1/4
Options: 12, 18, 24, 36

Back

18

Front

Which of these numbers could NOT be a common denominator for these two fractions?
2/4   and   3/8
Options: 32, 12, 8, 24

Back

12

Front

2/3 + 1/2 =

Back

7/6