Operations with Fractions and 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

Answer in simplest form.
5/8 + 3/8

• 1
• 8/8
• 2/8
• 1/4

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30
• 11
• 6
• 5

Tags

CCSS.5.NF.A.1

What is the least common denominator of 1/9 and 2/3?

• 6
• 3
• 9
• 21

Tags

CCSS.4.NF.A.2

Reduce if needed.

• 11/10
• 5/6
• 1  1/10
• 3  3/7

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• $\frac{12}{17}$

• $\frac{17}{20}$

• $\frac{20}{17}$

• $2\ \frac{1}{2}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• $\frac{13}{15}$

• $1\ \frac{7}{12}$

• 1

• $\frac{9}{15}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $4\ \frac{3}{8}+1\ \frac{1}{4}=$  

•  $5\ \frac{4}{12}$  

•  $5\ \frac{5}{8}$  

•  $5\ \frac{4}{8}$  

•  $5\ \frac{5}{16}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $10\ \frac{3}{4}+7\ \frac{1}{4}=$  

•  $4$  

•  $17\ \frac{1}{2}$  

•  $18$  

•  $3\ \frac{1}{2}$  

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

 $8\ \frac{1}{4}+6\ \frac{2}{5}=$  

•  $14\ \frac{3}{5}$  

•  $14\ \frac{13}{20}$  

•  $14\ \frac{11}{20}$  

•  $14\ \frac{1}{3}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2