Adding Fractions & Mixed Numbers

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

Tags

CCSS.7.NS.A.1C

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{3}{5}+\frac{1}{4}$ 

• $\frac{12}{17}$

• $\frac{17}{20}$

• $\frac{20}{17}$

• $2\ \frac{1}{2}$

Add the mixed numbers 

 $5\ \frac{1}{2}+\ 6\ \frac{1}{3}$  

• $9\ \frac{5}{7}$

• $5\ \frac{2}{3}$

• $10\ \frac{1}{5}$

• $11\ \frac{5}{6}$

Add the mixed numbers vertically.

 $4\ \frac{2}{3}+\ 9\ \frac{9}{10}$  

• $14\ \frac{17}{30}$

• $13\ \frac{47}{30}$

• $\frac{1}{2}$

• $15\ \frac{2}{3}$

Add the mixed numbers vertically. Simplify if needed.

 $3\ \frac{2}{3}+1\ \frac{1}{8}$  

•  $4\ \frac{3}{24}$  

•  $4\ \frac{3}{11}$  

•  $4\ \frac{19}{24}$  

•  $4\ \frac{3}{8}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $2\frac{9}{10}\ +6\ \frac{1}{3}=$ 

•  $9\ \frac{7}{30}$  

•  $5\ \frac{4}{9}$  

•  $6\ \frac{1}{4}$ 

•  $4\ \frac{1}{2}$  

 $\frac{1}{2}+\frac{1}{3}=$  

 $1\frac{1}{2}+2\frac{2}{5}=$  

 $7\frac{1}{2}+2\frac{4}{5}=$