Subtracting Fractions With Like And Unlike Denominators

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication

What is the first step of adding or subtracting two fractions?

• Checking if the numerators are the same

• Checking if the denominators are the same or different

• Checking that the fractions are equal

• Adding or subtracting

When adding or subtracting fractions with unlike denominators, what is the first step?

• Add the numerators

• Add the denominators

• Find a common denominator

What is the difference of the given problem?

• 
• 
• 
• 

Solve and simplify if needed:

1/3 - 1/5 =

Mathematical Equivalence

OFF

When adding and subtracting fractions, what needs to be the same?

• the numerator

• the denominator

• nothing

• everything

Solve and simplify to lowest terms

• A

• B

• C

• D

Adding & Subtracting Fractions with

UNLIKE Denominators

• I'm ready to try

• Let's do this!

• I'm not sure about these.

How can you find a common denominator?

• Add the denominators together

• Pick your favorite number

• Find a common multiple for the two denominators