Add and Subtract Mixed Numbers and Fractions with Like Denominators

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding fractions with like denominators, the denominators....

• stay the same

• are added together

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

3 2/7 + 8 1/3

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

The gas tank in Rebecca’s old car held 14 1/5 gallons. The gas tank in Rebecca’s new car holds 18 1/2 gallons. How many more gallons will the tank in Rebecca’s new car hold than her old car?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding and subtracting fractions, what needs to be the same?

• the numerator

• the denominator

• nothing

• everything

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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 first step in solving this problem? 
⅘ + ½ =

• 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