Adding and Subtracting Fractions with Unlike Denominators Quiz

What is the first step when adding or subtracting fractions with unlike denominators?

• Find the greatest common factor of the denominators.

• Add or subtract the numberators

• Find the lowest common denominator (by finding the LCM of the denominators)

• Add or Subtract the denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Is the numerator on the top or bottom?

Tags

CCSS.3.NF.A.1

What is the number on the bottom of the fraction called?

Tags

CCSS.5.NF.B.3

When do you add or subtract the numerators?

• After you rename the fractions using the common denominator and equivalent fractions.

• Right after you find the lowest common denominator.

• As soon as you begin the problem.

• Before find the lowest common denominator.

Tags

CCSS.5.NF.A.1

When do you add or subtract the denominators.

• At the end of the problem.

• Once you have renamed the fractions.

• Before finding the common denominator.

• NEVER: Are you kidding me? That is a major NO NO!

Tags

CCSS.5.NF.A.1

What is the final step when adding or subtracting fractions?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Find the least common denominator for the fractions 1/3 and 2/5.

• 10

• 12

• 8

• 15

Tags

CCSS.5.NF.A.1

What is the least common denominator for the fractions 3/4 and 1/6?

• 3

• 12

• 10

• 8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Convert the fraction 2/7 to an equivalent fraction with a denominator of 21.

• 5/21

• 6/21

• 8/21

• 3/21

Tags

CCSS.5.NF.A.1

Change the fraction 5/8 to an equivalent fraction with a denominator of 40.

• 25/40

• 10/40

• 30/40

• 15/40

Tags

CCSS.5.NF.A.1