Adding Mixed Numbers with Unlike Denominators

What is the first step in adding mixed numbers with unlike denominators?

• Add the whole numbers directly.

• Convert the mixed numbers to improper fractions.

• Find the least common multiple of the denominators.

• Multiply the numerators by each other.

In the example of adding 2 and 1/4 to 1 and 1/3, what is the common denominator used?

• 12

• 6

• 8

• 16

When adding 3 and 1/6 to 2 and 3/4, what is the common denominator?

• 16

• 10

• 12

• 14

How do you convert an improper fraction to a mixed number?

• Multiply the numerator by the denominator.

• Subtract the denominator from the numerator.

• Divide the numerator by the denominator.

• Add the numerator to the denominator.

In the example of adding 2 and 1/2 to 1 and 3/5, what is the final mixed number result?

• 6 and 1/10

• 3 and 1/10

• 5 and 1/10

• 4 and 1/10