Using Repeated Addition for Multiplying Whole Numbers and Fractions

The video tutorial explains how to multiply whole numbers by fractions using repeated addition. It starts with a basic multiplication example and then demonstrates how to apply the same concept to fractions. The tutorial covers examples like 3 times 1/4 and 4 times 2/5, showing how to express these as repeated addition. It also discusses the commutative property of multiplication, illustrating how changing the order of numbers does not affect the result. The video emphasizes using repeated addition as a strategy for solving multiplication problems involving fractions.

What is the result of multiplying 3 by 4 using repeated addition?

• 12

• 15

• 7

• 9

Tags

CCSS.3.OA.A.1

How many groups are there in 3 times 4?

• 3

• 4

• 12

• 7

Tags

CCSS.3.OA.A.1

How can 3 times 1/4 be represented using repeated addition?

• 1/4 + 1/4 + 1/4 + 1/4

• 1/4

• 1/4 + 1/4

• 1/4 + 1/4 + 1/4

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

What does 3/4 represent in the context of multiplying fractions?

• 3 times 1/4

• 4 times 1/3

• 1/4 times 3

• 3 times 4

Tags

CCSS.5.NF.B.4A

What is the sum of four 2/5s?

• 7/5

• 10/5

• 9/5

• 8/5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What mixed number does 8/5 convert to?

• 1 3/5

• 1 4/5

• 2

• 1 2/5

What is the result of adding 2/5 four times?

• 2/5

• 8/5

• 4/5

• 8/4

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

What is the correct representation of 8/5 as a mixed number?

• 1 3/5

• 1 2/5

• 2

• 1 4/5

Using the commutative property, what is equivalent to 1/4 times 5?

• 5 times 1/5

• 1/5 times 5

• 4 times 1/5

• 5 times 1/4

Tags

CCSS.3.OA.B.5

What is the result of 5 times 1/4 expressed as a mixed number?

• 1 1/4

• 1

• 1 1/5

• 1 2/4

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C