Adding Fractions with Different Denominators

Which of the following lists the correct steps for adding two fractions with unlike denominators?

• Get a common denominator, create equivalent fractions, add numerators, and add denominators.

• Add the numerators, write the denominator

• Get a common denominator, write the numerator, and add everything.

• Get a common denominator, create equivalent fractions, add the numerators, then keep the denominator the same.

What is a common denominator?

• when the numbers are different in the numerator

• a common multiple for two or more denominators

• mixed number

• when you multiply the denominators by the numerators

• - 3/56
• 18/56
• - 4/15
• 29/56

• 13/15
• 1 7/12
• 1
• 9/15

Add the Fractions!

• 27/100

• 37/10

• 37/100

• 27/10

When adding fractions what part of the fraction needs to be the same?

• Numerator

• Denominator

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

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. 

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

• Numerator

• Denominator

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication