Adding and Subtracting Fractions with Unlike denominator

19/20 - 3/10 = 

• 15/20
• 22/20
• 13/20

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

8/15 - 1/5 = 

• 1/10
• 1/3
• 7/15

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..

• Find the greatest common factor to change your denominator

• Change the denominator by picking a random number then divide

• Find the least common multiple to change your denominator

• none of these are true

Tags

CCSS.7.NS.A.1C

5/10 + 8/5

• 5/9

• 1/10

• 2 1/10

• 2 2/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/6 + 1/2 =

• 5/6
• 3/6
• 4/6
• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Aden is helping his dad paint his house. They mixed 5/9 gallons of white paint and 1/6 gallons of blue paint. How many gallons was the mixture in all?

• 6/18 gallons

• 13/18 gallons

• 4/5 gallons

• 1/6 gallons

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• 30
• 11
• 6
• 5

Tags

CCSS.4.NF.A.2

Andrew ran 1/3 of a mile and swam 5/6 of a mile. How much farther did he swim than run?

• 5/18 of a mile

• 1/2 of a mile

• 4/3 of a mile

• 3/6 of a mile

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Bart made potato salad for a picnic. He used 1/4 cup fewer onions than the recipe called for. If the recipe called for 7/8 cup of onions, what amount of onions did Bart use?
Hint: subtract

• 5/8 cup
• 3/8 cup
• 1 1/2 cups
• 3/4 cup

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2