Adding & Subtracting Fractions

Adding & Subtracting Fractions

Adding Fractions

Steps:

1. Make sure the bottom numbers (denomenators) are the same.
2. Add the top numbers (numerators) and put the answer over the denomenator.
3. Simplify

Example 1:

 $\frac{1}{4}+\frac{2}{4}$  

Example 2:

 $\frac{1}{3}+\frac{1}{6}$  

Example 3:

 $\frac{1}{5\ }+\ -\frac{1}{3}$  

Subtracting Fractions

Steps:

1. Make sure the denomenators are the same.
2. Subtract the numerators and keep the denomenator in your answer.
3. Simplify.

Example 1:

 $\frac{3}{5}-\ \frac{2}{5}$  

Example 2:

 $\frac{7}{9}-\frac{2}{3}$  

Example 3:

 $-\frac{4}{6}-\frac{3}{8}$  

Multiple Choice

When adding and subtracting fractions....

• The denominators must be the same

• The numerators must be the same

Multiple Select

What common denominator can be used for

 $\frac{2}{5}\ and\ \frac{1}{4}$  

• 9

• 20

Multiple Choice

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

Multiple Choice

Simplify 18/24 to lowest terms.

• 4/3

• 9/12

• 3/4

• 1/2

Multiple Choice

A pizza has 5 pieces. Sara eats 3 of the pieces. What fraction of the pizza did Sara eat?

• 3/5

• 2/5

• 5/5

• 1/5

Multiple Choice

The number on the top of a fraction is called what?

• numerator

• denominator

• fractionator

• equivalent

Multiple Choice

Brad ate 3/4 of his Kit-Kat bar and gave the rest to Cole. How much of the Kit-Kat bar did Cole get to eat?

• 3/4

• 1/4

• 2/4

• None

Multiple Choice

Kayden has 3/9 of a pizza and Laila gave her 2/9 of a pizza. How much pizza does Kayden have now?

• 5 Pizzas

• 5/9 of a pizza

• 1/9 of a pizza

• 1 pizza