Applying GCF and LCM in Fraction Operations

What is the first step when multiplying two fractions?

• Multiply the numerators and then the denominators

• Divide the numerators and denominators

• Add the numerators and denominators

• Subtract the numerators and denominators

Tags

CCSS.5.NF.B.6

How do you simplify a fraction?

• Multiply both the numerator and denominator by the same number

• Divide both the numerator and denominator by their greatest common factor

• Subtract the numerator from the denominator

• Add the numerator and denominator

What is the greatest common factor (GCF) of 3 and 15?

• 1

• 3

• 5

• 15

In cross-division, if 3 goes into 6 two times, what do you change the 6 to?

• 1

• 2

• 3

• 4

Tags

CCSS.4.NBT.B.6

What is the simplified form of 3/30?

• 1/3

• 1/10

• 1/15

• 1/5

What is the product of 5/8 and 2/4?

• 1/4

• 10/32

• 5/16

• 5/4

Tags

CCSS.5.NF.B.6

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

• Multiply the numerator by the denominator

• Add the numerator and the denominator

• Divide the numerator by the denominator

• Subtract the numerator from the denominator

What is the least common multiple (LCM) of 12 and 20?

• 100

• 80

• 60

• 40

What is the simplified form of 16/60?

• 1/15

• 2/15

• 8/30

• 4/15

How can knowing the GCF and LCM help you with fractions?

• It helps you simplify products, sums, and differences

• It helps you divide fractions

• It helps you multiply fractions faster

• It helps you convert fractions to decimals