Least Common Denominators

What is the least common denominator of 3/4 and 5/7

• 1

• 11

• 15

• 28

What is the least common denominaotr of 

 $\frac{1}{10}$   and  $\frac{7}{8}$  

• 18

• 40

• 60

• 80

 $\frac{7}{12}$   and  $\frac{1}{8}$  

What is the least common denominator?

• 7

• 20

• 24

• 48

What is the least common denominator of 2 and 8

• 4

• 8

• 12

• 16

What is the least common denominator of 6, 8, and 12

• 12

• 18

• 24

• 72

What is the least common denominator for 5, 12, 15

• 24

• 30

• 45

• 60

Linda is changing the fractions 1/3 and 1/5 to equivalent fractions with the same denominator. If he changes 1/3 to 5/15, how should he change 1/5?

• She should change 1/5 to 2/10

• She should change 1/5 to 3/10

• She should change 1/5 to 3/15

• She should change 1/5 to 4/15

Larry is changing the fractions 3/8 and 3/10 to equivalent fractions with the same denominator. If he changes 3/8 to 15/40, how should she change 3/10?

• He should change 3/10 to 12/40

• He should change 3/10 to 15/40

• He shoujld change 3/10 to 6/20

• He should change 3/10 to 5/20