Adding and Subtracting unlike fractions

What number could be a common denominator for these three fractions?
1/2   and   1/3   and   1/4

• 9
• 8
• 12
• 6

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

• 30
• 11
• 6
• 5

What fraction of the rectangle is blue?

• 1/6
• 1/3
• 6/2
• 2/3

Which is NOT an equivalent fraction to one half?

• 2/4
• 2/3
• 4/8
• 3/6

Solve: 4/18 + 2/9

• 4/9

• 8/18

• 4/18

• 8/9

• 2/5
• 5/6
• 4/6
• 1/5

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

2/12 + 1/12 + 3/12 + 1/12 + 4/12 =

• 8/12
• 1
• 11/12
• 10/12

What is 8/9 - 5/6?

• 1/18
• 3/4
• 6/7
• 10/12

Simplify  9/18

• 1/2
• 3/6
• 9/18
• 5/10