Mastering Multiplication of Mixed Numbers and Fractions

What is the first step in multiplying mixed numbers?

• Multiply numerators

• Add the fractions

• Convert to improper fractions

• Simplify the fractions

Tags

CCSS.5.NF.B.6

What is the purpose of cross cancellation before multiplying fractions?

• To simplify the problem

• To find the greatest common factor

• To convert mixed numbers to improper fractions

• To add fractions

Tags

CCSS.5.NF.B.6

What is the result of 13/4 times 2/5 after applying cross cancellation?

• 2 and 1/5

• 13/10

• 26/20

• 1 and 3/10

Tags

CCSS.5.NF.B.6

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

• Divide the numerator by the denominator

• Multiply the numerator by the denominator

• Add the numerator to the denominator

• Subtract the denominator from the numerator

What is the simplified form of 26/20?

• 1 and 1/5

• 1 and 3/10

• 13/10

• 2 and 1/10

What is the first step in solving 5 and 2/3 times 3/7?

• Simplify the fractions

• Multiply straight across

• Apply cross cancellation

• Convert to improper fractions

Tags

CCSS.5.NF.B.6

What does cross cancellation help to achieve?

• Conversion of mixed numbers

• Division of fractions

• Simplification before multiplication

• Easier addition of fractions

Tags

CCSS.5.NF.B.6

What is the result of 17/3 times 3/7 after simplification?

• 17/7

• 5 and 1/3

• 51/21

• 2 and 3/7

Tags

CCSS.5.NF.B.6

How many whole groups of 7 are in 17?

• Two

• Three

• Four

• One

Tags

CCSS.3.OA.A.3

What is the greatest common factor used in the cross cancellation for the second example?

• 7

• None

• 17

• 3