This video tutorial introduces multiplication as a faster alternative to repeated addition. It explains the symbols used in multiplication and how to interpret them as 'groups of'. The video provides examples of using repeated addition to solve multiplication problems and includes story problems to apply these concepts. The tutorial concludes with practice problems and a light-hearted joke.

What is the purpose of using multiplication over repeated addition?

• None of the above

• To increase the complexity of problems

• To simplify addition of similar numbers

• To make calculations slower

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CCSS.3.OA.A.1

What does the symbol 'x' represent in multiplication?

• Subtraction

• An unknown variable

• Division

• Multiplication

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CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

In the equation '2 * 1', how many groups are there?

• Two groups

• Three groups

• Four groups

• One group

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CCSS.2.OA.C.3

What is the result of '5 * 2' using repeated addition?

• 12

• 10

• 7

• 5

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CCSS.3.OA.A.1

How many total objects are there in 'four groups of three'?

• Twelve

• Seven

• Fifteen

• Three

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CCSS.2.OA.C.4

What is the total number of balls Lenny has if he puts four balls in each of his three toy boxes?

• 15

• 12

• 20

• 7

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CCSS.2.OA.C.4

How many chocolates does Miss Sullivan have if each of her two boxes contains eight chocolates?

• 18

• 8

• 16

• 10

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CCSS.2.OA.C.4

What is the result of '7 * 5' using repeated addition?

• 25

• 45

• 35

• 40

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CCSS.3.OA.A.1

Calculate '5 * 4' using the concept of groups.

• 10

• 15

• 20

• 25

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CCSS.3.OA.A.1

What is the total when five groups of 50 are added together?

• 150

• 300

• 100

• 250

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CCSS.3.OA.A.3