Mastering Multiplication Through Repeated Addition

This video tutorial teaches multiplication using repeated addition. It explains how multiplication can be represented with equal groups and introduces the concept of factors. The commutative property of multiplication is demonstrated, showing that factors can be switched without changing the product. The video also introduces the Dorito Chip strategy, a method for solving multiplication problems by grouping and pairing numbers. By the end, viewers will understand how to multiply using repeated addition and the Dorito Chip strategy.

What does it mean to multiply?

• To subtract equal amounts

• To divide equal amounts

• To combine equal amounts

• To add different amounts

Tags

CCSS.3.OA.A.1

How can multiplication be represented?

• Using different groups of objects

• Using equal groups of objects or drawings

• Using random numbers

• Using subtraction

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CCSS.3.OA.A.1

What are the two numbers being multiplied called?

• Sums

• Factors

• Differences

• Products

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CCSS.5.NBT.A.2

What is the product of 3 times 5 using repeated addition?

• 12

• 10

• 15

• 20

Tags

CCSS.3.OA.A.1

What does the commutative property of multiplication state?

• You can only switch the factors in addition

• You cannot switch the factors

• You can switch the factors and still get the same product

• You can switch the factors and get a different product

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CCSS.3.OA.B.5

What is the product of 5 times 3?

• 10

• 12

• 15

• 20

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CCSS.3.OA.C.7

Why is the Dorito chip strategy named so?

• Because it looks like a triangle

• Because it uses circles

• Because it uses chips

• Because it is a random name

How many groups of 4 do you need to make to solve 6 times 4 using the Dorito chip strategy?

• 5

• 4

• 6

• 7

Tags

CCSS.3.OA.A.1

What is the first step in the Dorito chip strategy?

• Draw a V-shape

• Pair off the equation

• Write out the equation

• Add up the pairs

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CCSS.1.OA.A.1

What is the product of 6 times 4 using the Dorito chip strategy?

• 20

• 22

• 24

• 26

Tags

CCSS.3.OA.A.1