Add and Subtract Fractions (Rational Numbers)

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction
• Rewrite the fractions in the simplest form. 
• Find a common denominator. 
• Make each fraction into an improper faction. 

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator for 1/3 and 3/4?

• 6
• 4
• 3
• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/5 + 1/4 = 

• 5/20
• 12/20
• 7/20
• 17/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 6   4/10
• 6
• 12    8/10
• 5    8/10

Tags

CCSS.7.NS.A.1C

Following the integer rules, would you add or subtract the fractions?

• add, the answer would be positive

• add, the answer would be negative

• subtract, the answer will be positive

• subtract the answer will be negative

Tags

CCSS.7.NS.A.1C

• - 1  7/40
• 15/40
• - 1 10/40
• 17/40

Tags

CCSS.7.NS.A.1C

 ¼ − (-¾)

• -1/2
• 4/0
• 1
• None of the above

Tags

CCSS.7.NS.A.1C

 $-1\ \frac{1}{4}\ +\ \left(-2\ \frac{1}{2}\right)$  

• - 3 3/4

• - 3 1/4

• -2 3/4

• -3 1/2

Tags

CCSS.7.NS.A.1C

 $-3\ \frac{1}{6}\ +\ 5\ \frac{3}{5}$   

• 2 13/ 30

• -2 13/30

• 1 13/30

• -1 13/30

Tags

CCSS.7.NS.A.1C

 $2\ \frac{3}{4}\ -\ \left(-\frac{1}{4}\right)\$    

• 2 1/2

• 3 1/4

• 3

• -3

• Answer not given

Tags

CCSS.7.NS.A.1C