Adding and Subtracting Fractions Pictorials

What is the sum of these fractions?

• 4/5

• 3/20

• 17/20

• 4/20

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. 

5/9-3/9

• 2/9

• 1/2

• 3/9

• 4/5

What is the sum of these fractions in lowest terms?

• 22/5

• 6/3

• 22/15

• 6/15

What is the sum of these fractions in lowest terms?

• 22/5

• 6/3

• 22/15

• 6/15

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Q1. What is the ratio of 14/16 to 7/8?

• A) 14/16

• B) 7/8

• C) 8/7

• D) 4/10

• 2/5
• 5/6
• 4/6
• 1/5

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