Adding and Subtracting Rational Numbers

 $\frac{3}{5}+\frac{1}{5}$  

•  $\frac{2}{5}$  

•  $\frac{3}{25}$  

•  $\frac{4}{10}$  

•  $\frac{4}{5}$  

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

50 + 3.2

• 46.8

• 8.2

• 53.2

• -53.2

Tags

CCSS.7.NS.A.1C

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 2.294

• 16.21

• 2.491

• 2.379

Tags

CCSS.6.NS.B.3

 $\frac{3}{7}-\frac{1}{7}$  

•  $\frac{3}{49}$  

•  $\frac{2}{14}$  

•  $\frac{4}{7}$  

•  $\frac{2}{7}$  

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

To add fractions you must have a common ______________.

• Answer

• Numerator

• Denominator

• Number

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

To add or subtract decimals correctly, you must first _____________.

• line up the decimals.

• ignore the decimals.

• count the decimal places.

• move the decimals around in the numbers.

Tags

CCSS.5.NBT.B.7