Multiplying Whole Numbers and Fractions

How do you convert a whole number into a fraction for multiplication?

• Divide it by 1

• Subtract 1 from it

• Multiply it by 1

• Put it over 1

What is the result of multiplying 3 by 1/2?

• 1 2/3

• 2/3

• 3/2

• 1 1/2

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

When multiplying a whole number by a fraction less than 1, the result is...

• Greater than the whole number

• Equal to the whole number

• Less than the whole number

• Unchanged

Tags

CCSS.5.NF.B.5B

What is the final step after multiplying across numerators and denominators?

• Convert to a mixed number

• Simplify the fraction

• Add 1 to the numerator

• Multiply the result by 2

Tags

CCSS.5.NF.B.6

What is 8 times 4/5?

• 32/5

• 6 2/5

• 7 1/5

• 40/5

Tags

CCSS.5.NF.B.5B

How do you simplify an improper fraction?

• By multiplying the numerator by the denominator

• By subtracting the denominator from the numerator

• By dividing the numerator by the denominator

• By adding the numerator and denominator

What is the result of 5/7 times 5?

• 5 5/7

• 10/12

• 25/7

• 3 4/7

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What does multiplying straight across refer to?

• Dividing numerators by denominators

• Adding numerators and denominators

• Multiplying numerators together and denominators together

• Subtracting numerators from denominators

Tags

CCSS.5.NF.B.6

What is the result of 3/4 times 12?

• 36/4

• 3 1/4

• 9

• 12 3/4

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Why do we convert improper fractions to mixed numbers?

• To make them easier to understand

• Because improper fractions are incorrect

• To increase their value

• To simplify them further