Adding & Subtracting Fractions

Match the following

• the number above the line in a fraction

• Least Common Multiple

• the number below the line in a common fraction

• Denominator

• The smallest number that is a multiple of two or more numbers

• Common Denominator

• Fractions that have the same denominator

• Numerator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.B.3

Rearrange the steps for adding & subtracting fractions with unlike denominators in the correct order.

• Simplify if necessary.

• Rewrite the equivalent fractions

• List multiples and find the LCD

• Add or subtract the equivalent fractions.

Tags

CCSS.7.NS.A.1C

You must find the ​ (a)   before you can add or subtract fractions with unlike denominators.

• common denominator
• common numerator
• multiple
• simplified fraction

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Match the following

​  

• 1/4

• 9/12

• 1/5

• 3/30

• 3/4

• 5/10

• 1/2

• 3/15

• 1/10

• 2/8

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

Tags

CCSS.7.NS.A.1C

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

Bob has a stamp collection. He wrote down what states the stamps are from.

⅙ from Indiana 

⅓ from California 

⅓ from South Dakota 

⅙ from Florida

What fraction of Bob’s stamps came from California, Florida, AND Indiana?

Mathematical Equivalence

ON

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

Mathematical Equivalence

ON

Tags

CCSS.4.NF.B.3A