ADD FRACTIONS PRACTICE

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators
• add the denominators
• find a common denominator
• find a common numerator

What number could be a LEAST common denominator for these two fractions? List all the multiples and find the LEAST COMMON DENOMINATOR (LCD)

2/3 and 3/4

What number could be a common denominator for these two fractions?

1/5 and 5/6?

What is the sum?

• $\frac{6}{12}$

• $\frac{17}{12}=\ 1\ \frac{5}{12}$

• 1

• $\frac{15}{7}\ =\ 2\ \frac{1}{7}$

 $-\frac{1}{4}+\frac{6}{8}$  

• 1

•  $\frac{1}{2}$  

•  $-1\ \frac{1}{6}$  

• -2

 $\frac{-1}{3}+\frac{-1}{5}$  

•  $-\frac{8}{15}$  

•  $\frac{7}{15}$  

•  $-\frac{2}{3}$  

•  $\frac{1}{8}$  

 $3\ \frac{1}{3}+2\ \frac{1}{6}$  

•  $5\ \frac{1}{2}$  

•  $5\ \frac{1}{1}$  

•  $3\ \frac{1}{2}$  

•  $4\ \frac{1}{4}$