Adding and Subtracting Fractions with Unlike 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

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

Which of these numbers could NOT be a common denominator for these three fractions?
1/3   and 2/5   and   3/10

• 15
• 30
• 60
• 90

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

Complete the equivalent fraction.

• 6
• 9
• 15
• 23

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B

Solve:

8/9 - 1/3 =

• 7/6

• 5/9

• 2/3

• 8/27

Tags

CCSS.7.NS.A.1C

• 1/12
• 1
• 2/35
• 23/25

Tags

CCSS.7.NS.A.1C

Yamos ate  $\frac{3}{8}$  of a pizza and Havah ate  $\frac{1}{4}$  of the pizza. How much pizza did they eat in all?

• 1/2

• 5/8

• 3/4

• 7/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{3}{5}-\frac{2}{6}$  

• 0

•  $\frac{1}{3}$  

•  $\frac{1}{30}$  

•  $\frac{4}{15}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2