Adding and Subtracting Rationals with Like Bases

Choose the BEST answer. (Simplify!)

5/10 + 1/10 = ?

• 10/10

• 6/10

• 3/10

• 3/5

Choose the BEST answer! (Simplify!)

4/6 - 1/6 = ?

• 5/6

• 3/6

• 1/2

• 5/12

Which model shows the answer to the problem below?

3/4 - 1/4 = ?

• 
• 
• 
• 

We DO NOT add or subtract the _____________ when doing addition or subtraction with fractions.

• numerators

• denominators

• nouns

• addition signs

At the end of each fraction addition or subtraction problem, I should ______________ if possible.

• add extra fractions

• multiply

• simplify

• beautify

Choose the BEST answer! (Simplify!)

2/12 + 3/12 = ?

• 5/12

• 5/24

• 6/12

• 1/4

Choose the BEST answer! (Simplify!)

9/12 + 4/12 = ?

• 13/12

• 5/12

• 1 and 1/12

• 7

Choose the BEST answer! (Simplify!)

3/9 + 4/9 = ?

• 7/18

• 7/9

• 12/9

• 12/81

2/3 - 1/3

• 1/3

• 2/1

• 2/0

• 1/9

Choose the BEST answer! (Simplify!)

15/20 + 3/20 = ?

• 18/20

• 45/20

• 10/20

• 9/10