Operations with Fractions (positive and negative)

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 must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

To multiply two fractions...

• multiply the numerators and keep the denominators the same

• multiply the numerators and multiply the denominators.

• keep the numerators the same and multiply the denominators.

• guess and check.

Tags

CCSS.5.NF.B.4

What is the least common denominator you could use to subtract 1/3 and 1/4?

• 3
• 4
• 24
• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/7 + (-9/7)

• -4/7

• -7/4

• 4/7

• -7/4

Tags

CCSS.7.NS.A.1C

11/6 - (-7/6)

• -3

• 1/3

• -1/3

• 3

Tags

CCSS.7.NS.A.1C

-5/8 - (-15/8)

• 5/4

• -5/4

• 4/5

• -4/5

Tags

CCSS.7.NS.A.1C

5/7 - 9/7

• 4/7

• -4/7

• 7/4

• -7/4

Tags

CCSS.7.NS.A.1C

-2/7 + (-2/3)

• -21/20

• 21/20

• 20/21

• -20/21

Tags

CCSS.7.NS.A.1C

What is the difference of these fractions in lowest terms?

• 7/9
• 1/5
• 12/20
• 1/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2