Operations with Fractions

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30
• 11
• 6
• 5

1/3 + 1/2 = 

• 6/7
• 2/6
• 3/5
• 5/6

3/4 + 2/8 = 

• 1
• 5/12
• 6/32
• 5/8

8/9 - 1/3 = 

• 7/6
• 5/9
• 2/3
• 8/27

1/2 x 5/8 

• 3/4
• 6/8
• 5/16
• 5/8

3/8 x 2/5 (Remember to Simplify)

• 7/15
• 1/3
• 6/40
• 3/20

9/10 ÷ ⅖

• 1 ½
• 2 ¼
• 18/50
• 9/25

3/10 ÷ ⅘

• 8/3
• 4/5 
• 3/8
• 5/4

4 x 1/6=

• 6/4

• 4/6

• 4/24

• 1/24