Finding Lowest Common Denominator

Find the lowest common denominator of the fractions:

• There is no possible common denominator.

Find the lowest common denominators for the fractions:

• There is no common denominator possible.

To have a common denominator means two or more fractions have the same number on the ___________ of the fraction line.

• top

• bottom

What is the least common denominator of 1/2 and 3/7?

• 2

• 14

• 7

• 28

What is the least common denominator of 2/6 and 7/8?

• 36

• 8

• 18

• 24

• 2
• 4
• 1
• 3

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

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

• numerator

• denominator

• equivalent

• improper