Adding and Subtracting Fractions with Uncommon Denominators

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

(Choose one that is true) When you add or subtract fractions with unlike denominators you..

• Add both the numerators and denominators

• Change the denominator by picking a random number then divide

• Find the least common multiple of both denominators

• none of these are true

Tags

CCSS.7.NS.A.1C

What is the least common denominator for this problem? 3/16 + 2/4 =

• 24

• 8

• 16

• 32

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator of 6/8 and 4/12?

• 12
• 24
• 8
• 16

What is the least common denominator of 1/4 and 2/5?

• 5
• 25
• 10
• 20

Complete the equivalent fraction.

• 6
• 9
• 15
• 23

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Complete the equivalent fraction.

• 2

• 12

• 1

• 4

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Solve:

8/9 - 1/3 =

• 7/6

• 5/9

• 2/3

• 8/27

Tags

CCSS.7.NS.A.1C

Solve:
½ + ⅖

• 9/10
• 1/2
• 5/10
• 4/10

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 5/6
• 1
• 1  1/6
• 8/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2