10/14 Adding and Subtracting Fractions

2/12 + 3/12

• 5/12

• 5/24

• 6/12

• 6/144

4/5 - 1/5

• 5/5

• 4/1

• 3/0

• 3/5

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2

CCSS.3.NF.A.3

Add and simplify
1/14 + 2/7 + 1/7 

• 1/7

• 2/3

• 7/14

• 1/2

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

Add:  $\frac{1}{2}+\ \frac{1}{3}$  

• 2/5

• 2/6

• 5/6

• 1

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add:  $\frac{2}{3}+\frac{5}{6}\$  

• 3/2

• 9/3

• 1/2

• 2  2/3

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Subtract:  $\frac{8}{5}\ -\ \frac{2}{3}$  

• 14/15

• 6/2

• 3

• 10/3

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Subtract: 11/3 - 14/4

• 1/6

• -3/1

• 3

• 2 2/3

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.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.3D

CCSS.4.NF.B.3C