Common Denominator Adding Fractions

What do you need to have when adding unlike fractions

• common denominator

• common numerator

• common numerator and denominator

• common fractions

Which sentence BEST explains how to add fractions?

• Two fractions are added when they have common numerators.

• Two Fractions are added only using numerators that have the same number.

• Two fractions can be added when they have common denominators

• Two fractions can be added no matter the size. 

What must you have to add and subtract fractions?

• Different denominators

• Common denominators

• Common numerators

• Different numerators

In order to add or subtract fractions, both fractions must ​ (a)  

• have a common denominator.

• have a common numerator.

• be simplified.

• be reduced to lowest terms.

When adding fractions, they must have a common _____

• denominator

• numerator

• brother

• math class

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Add the fractions 2/5 and 3/10 with a common denominator.

• 1/3

• 7/10

• 5/7

• 4/9

To add 2 fractions w/ common denominator, ___

• add the numerators and retain the denominator

• add the numerator and denominator

• add the numerator and multiply the denominator

• add the numerator and subtract the denominator