Adding and Subtracting Fractions

• $\frac{1}{15}$

• $\frac{1}{12}$

• $\frac{1}{2}$

Tags

CCSS.5.NF.B.6

• $\frac{7}{8}$

• $\frac{2}{3}$

• $\frac{7}{12}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• $\frac{16}{12}$ or $1\frac{4}{12}$

• $\frac{4}{5}$

• $\frac{2}{3}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of the following fraction:

 $\frac{1}{3}$  + $\frac{1}{3}$  =

• 1

•  $\frac{1}{3}$  
  

•  $\frac{3}{3}$  

•  $\frac{2}{3\ }$ 

Tags

CCSS.4.NF.B.3A

What is the sum of these fractions?

• 4/5
• 3/20
• 17/20
• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

38/50 + 7/50

• 45/100

• 26/50

• 45/50

• 81/100

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is a denominator?

• The number below the bar of a fraction.

• The number above the bar of a fraction.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

36/40 - 24/40

• 60/80

• 12/0

• 12/40

• 12/20

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

To add or subtract fractions you must have

• Common numerators

• Common denominators

• Common multiples

• common factors

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D