Adding and Subtracting Fractions Review

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

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. 

• 5/14
• 3/7
• 5/7
• 5/14

• 4/5
• 4/10
• 2/5
• 5

Add these Fractions

• 2/4
• 3/4
• 4/8
• 1

What must you have to add and subtract fractions?

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

Answer explanation

Savannah's backpack is 1/2 pound heavier than Alberto's. To find the difference, subtract 5 3/4 from 6 1/4, which equals 1/2.

Answer explanation

Subtract the whole numbers first: 6 - 2 = 4. Then subtract the fractions: 5/8 - 3/8 = 2/8 = 1/4. Combine the whole number and fraction to get 4 1/4.