Adding and Subtracting Fractions and Mixed Numbers

Solve this mixed number equation:
1⅔ + 1⅚

• 3 1/2

• 2 7/6

• 3 7/6

• 2 7/9

Tags

CCSS.7.NS.A.1C

What is the the next step to finding this answer?

• Add the numerators (1+1=2)

• Multiply 12 X 1 for both fractions to find a new numerator
  

• Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1)

• This is a mistake, you don't need to convert to twelfths

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 5 1/2
• 1 1/6
• 5 5/14
• 4 19/24

Tags

CCSS.7.NS.A.1C

1/5 + 4/15=

• 5/20

• 3/10

• 3/15

• 5/15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Sally is painting her house. She used 1/8 of a gallon of paint in her bathroom, and 2/6 of a gallon of paint in her bedroom. How much paint did she use in all?

• 11/24

• 3/14

• 3/24

• 11/14

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tim has a board that is 5/6 feet long. He painted 2/18 feet of his board last night. How much more does Tim have left to paint?

• 13/18

• 7/24

• 7/18

• 3/7

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

The number on top of the fraction bar is called the _______. The number under the fraction bar is called the ______.

• denominator; numerator

• numerator; denominator

• mixed number; fraction

• fraction; mixed number

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

3 1/4 - 1 4/5

• 2 3/5

• 2 1/4

• 1 8/20

• 1 17/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Monique wants to bake a cake. She needs 2 1/8 cups of sugar, and 1 5/24 cups of flour. How many cups of ingredients will she use in all?

• 3 8/24 cups

• 3 3/32 cups

• 3 8/32 cups

• 3 3/24 cups

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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