Exploring Common Denominators in Rational Expressions

What is the first step in rewriting fractions with a common denominator?

• Drawing out the fractions

• Adding the fractions

• Multiplying the fractions

• Subtracting the fractions

Tags

CCSS.7.NS.A.1C

What is the least common multiple (LCM) of 4 and 5?

• 15

• 20

• 25

• 10

How do you convert 1/4 to a fraction with a denominator of 20?

• Multiply both numerator and denominator by 5

• Multiply both numerator and denominator by 3

• Multiply both numerator and denominator by 6

• Multiply both numerator and denominator by 4

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is 2/5 rewritten with a denominator of 20?

• 6/20

• 8/20

• 4/20

• 10/20

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the least common multiple (LCM) of 5 and 6?

• 20

• 35

• 25

• 30

How do you convert 2/5 to a fraction with a denominator of 30?

• Multiply both numerator and denominator by 6

• Multiply both numerator and denominator by 5

• Multiply both numerator and denominator by 3

• Multiply both numerator and denominator by 4

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is 1/6 rewritten with a denominator of 30?

• 6/30

• 5/30

• 4/30

• 3/30

What is the least common multiple (LCM) of 4 and 3?

• 12

• 14

• 10

• 16

How do you convert 1/4 to a fraction with a denominator of 12?

• Multiply both numerator and denominator by 4

• Multiply both numerator and denominator by 5

• Multiply both numerator and denominator by 3

• Multiply both numerator and denominator by 2

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is 2/3 rewritten with a denominator of 24?

• 14/24

• 16/24

• 18/24

• 12/24

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1