Mixed Number Fractions Adding and Subtracting

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

• Numerator

• Denominator

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

Add: 4 4/5 + 3 3/5

• 7 5/7

• 7 2/5

• 8 2/5

• 8

Gordon used 1 3/4 cups of flour and then used an additional 1 3/4 cups of flour again. How much flour did he use altogether?

• 2 6/8 cups

• 6/4 cups

• 2 2/4 cups

• 3 2/4 cups

What equation is represented on the number line?

• 3/3 + 11/11 = 14/14 = 1

• 3/15 + 9/15 = 12/15

• 11/15 - 3/15 = 8/15

• 15/15 - 1/15 = 14/15

Subtract: 2 1/4 - 1 3/4

• 1 2/4

• 2/4

• 9/4

• 7/4

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

• the numerator

• the denominator

• nothing

• everything

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

• Add the numerators

• Add the denominators

• Find a common denominator

How can you find a common denominator?

• Add the denominators together

• Pick your favorite number

• Find a common multiple for the two denominators