Adding and Subtracting Whole Numbers, Decimals, and Fraction

Solve.

 $7.5\ -\ 2.4\$  

• 3.1

• 6.2

• 5.1

• 4.2

Solve.

 $\frac{3}{5}\ -\ \frac{2}{5}$  

•  $\frac{1}{5}$  

•  $\frac{1}{10}$  

• 1

•  $\frac{2}{5}$  

Solve.

 $\frac{3}{4}-\frac{1}{2}$  

•  $\frac{1}{2}$  

•  $\frac{1}{4}$  

• 1

•  $\frac{1}{8}$  

 $1.7\ +\ 10.9$  

• 11.9

• 11.6

• 9.2

• 12.6

What do you need to add and subtract fractions?

• Common denominators

• Common numerators

• Common numerators and denominators

• Nothing

2.7 - 1.9

• 1.2

• 0.8

• 1.5

• 1

 $\frac{4}{10}\ +\ \frac{2}{5}$  

•  $\frac{4}{5}$  

•  $\frac{6}{10}$  

•  $\frac{6}{15}$  

•  $\frac{8}{15}$