Subtracting Fractions Unlike Denominators

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

8/9 - 1/3 = 

• 7/6

• 5/9

• 2/3

• 8/27

Subtract 9/20 - 1/4. Write the difference in simplest form.

• 1/2

• 8/16

• 4/20

• 1/5

7/10 - 1/2 = _____
in simplest form

• 2/10

• 1/5

• 6/10

• 8/2

When you add or subtract fractions with unlike denominators you..

• Find the greatest common factor to change your denominator

• Change the denominator by picking a random number then divide

• Find the least common multiple to change your denominator

• none of these are true

What is the difference of these fractions in lowest terms?

What is the difference of these fractions in lowest terms?

• 2/4

• 0

• 0/4

• 1/2

Find the difference.

What is the difference between ¼ and ⅙?

• 1/12

• 5/12

• 1/2

• 7/12

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions