Common Denominator

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

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 three fractions? 1/3, 2/5, 3/10. Options: 15, 30, 60, 90

Back

15

Front

What do you need to have when adding unlike fractions?

Back

common denominator

Front

Is this a correct answer?

Back

No, you cannot add unlike denominators

Front

What is the least common denominator you could use to subtract 1/3 and 1/4? Options: 3, 4, 24, 12

Back

12

Front

What is the least common denominator of 1/7 and 3/6?

Back

42

Front

Common denominator for adding 1/2 + 3/4?

Back

4

Front

Common denominator for adding 3/9 + 4/6?

Back

18

Front

Which fraction renames 3/4 with a denominator of 12? Options: 3/12, 4/12, 12/12, 9/12

Back

9/12