Finding the Least Common Denominator of Fractions

What should you review before proceeding with finding the least common denominator?

• How to add fractions

• How to find the least common multiple

• How to multiply fractions

• How to divide fractions

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What are the two parts of a fraction called in mathematics?

• Fraction and decimal

• Whole and part

• Numerator and denominator

• Top and bottom

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the purpose of finding the least common denominator?

• To multiply fractions

• To divide fractions

• To add or subtract fractions with different denominators

• To convert fractions to decimals

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step in finding the least common denominator of two fractions?

• Subtract the denominators

• Add the numerators

• Find the least common multiple of the denominators

• Find the greatest common divisor of the numerators

What is the least common multiple (LCM) of 8 and 20?

• 40

• 16

• 24

• 32

How do you convert the fraction 5/8 to have a denominator of 40?

• Multiply both numerator and denominator by 6

• Multiply both numerator and denominator by 5

• Multiply both numerator and denominator by 4

• Multiply both numerator and denominator by 7

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the equivalent fraction of 5/8 with a denominator of 40?

• 20/40

• 25/40

• 30/40

• 35/40

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

How do you convert the fraction 9/20 to have a denominator of 40?

• Multiply both numerator and denominator by 5

• Multiply both numerator and denominator by 4

• 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 the equivalent fraction of 9/20 with a denominator of 40?

• 17/40

• 19/40

• 16/40

• 18/40

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the least common denominator of 8 and 20?

• 16

• 40

• 24

• 32