Adding Fractions Related Denominators

The common denominator between 7/8 and 2/4 is:

• 4

• 16

• 8

• 12

In order to add or subtract fractions, they must have:

• Different denominators.

• A common denominator.

• The same numerator.

• No numerators.

What is the result of adding 3/4 and 2/5 when written with a common denominator of 20?

• 17/20

• 14/20

• 11/20

• 5/20

What is a requirement in order to add mixed numbers?

• Must have the same denominator.

• Must have the same numerator.

• Must turn into improper fractions.

• Must draw a picture of the fraction.

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

What is the sum of these fractions?

• 4/5

• 3/20

• 17/20

• 4/20

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

When adding fractions that have the same denominator already, you just have to do what to complete the problem?

• add the numerators and add the denominators

• add the numerators and denominators stay the same

• both numerator and denominator stays the same

• change to improper fractions

What two operations can be used to find a common denominator?

• addition and multiplication

• multiplication and subtraction

• division and addition

• multiplication and division

MIXED FRACTION ADDITIONS

6 2/8 + 5 4/8

• 11 3/4

• 11 6/8

• 1 3/8

• 10 6/8