Add Mixed Numbers with Unlike Denominators No Regrouping

Add the mixed numbers vertically. Simplify if needed.

Find Lowest Common Denominator & solve
1    1/3   +    4    1/4 =

• 5    7/12

• 5    2/24

• 5    2/12

• 5    7/24

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

• denominators.

• 4   19/5

• 4 5/10

• 4 19/25

• 4 5/10

• 4 5/10

• 4 19/25

6  2/5 + 4  1/5 =

• 10  4/5

• 10  3/5

• 10  1/5

• 10

• 10 7/12
• 11 1/9
• 10 5/9
• 11 5/12

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator