Mastering Multiplication of Whole Numbers and Fractions

The video tutorial explains how to share three pizzas equally between two people by dividing each pizza in half. It demonstrates two methods to calculate the total amount of pizza each person gets: by adding the halves together and by multiplying the number of pizzas by one-half. The tutorial also covers converting whole numbers into fractions for multiplication and converting improper fractions into mixed numbers. Additionally, it provides an example of multiplying a whole number by a fraction and simplifying the result.

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

• Use 1 as the denominator

• Subtract 1

• Multiply by 1

• Divide by 2

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

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

• 1/2

• 2/3

• 3

• 3/2

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

• Subtract the denominator from the numerator

• Divide the numerator by the denominator

• Multiply the numerator by the denominator

• Add the numerator to the denominator

What is 3/2 as a mixed number?

• 1 1/2

• 2/3

• 1 2/3

• 2 1/2

Tags

CCSS.5.NF.B.3

If you and a friend split three pizzas equally, how much pizza do you eat?

• 3 pizzas

• 2 pizzas

• 1 and 1/2 pizzas

• 1 pizza

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

When multiplying 4 by 3/5, what is the first step to take with the whole number?

• Divide by 5

• Subtract 1

• Convert to a fraction using 1 as the denominator

• Multiply by 3

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What is the result of multiplying 4 by 3/5?

• 2 2/5

• 12/5

• 7/5

• 12/15

How do you convert 12/5 into a mixed number?

• 6/5

• 5/12

• 2 2/5

• 2 1/2

What is the improper fraction for multiplying 4 and 3/5?

• 20/3

• 12/5

• 3/20

• 15/4

Tags

CCSS.5.NF.B.6

What is the correct way to multiply fractions?

• Subtract numerators from denominators

• Numerator times numerator, denominator times denominator

• Add both numerators and denominators

• Numerator times denominator, denominator times numerator

Tags

CCSS.5.NF.B.6