Exploring the Connection Between Addition and Multiplication

The video explains that multiplication is not merely repeated addition, as this definition fails with negative numbers, decimals, and fractions. Instead, it uses valid math rules, like the distributive property, to demonstrate why 7 plus 7 plus 7 equals 3 times 7. The video emphasizes understanding multiplication through proper math rules, making learners smarter.

Why can't we define multiplication as repeated addition?

• It only works with whole numbers.

• It is too complicated.

• It doesn't work with negative numbers, decimals, or fractions.

• It is not a good math rule.

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CCSS.7.EE.B.3

What is the first good math rule used to explain 7 plus 7 plus 7?

• 7 equals 3 plus 4

• 7 equals 1 times 7

• 7 equals 2 times 3.5

• 7 equals 7 times 1

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CCSS.3.OA.B.5

What property allows us to factor out the 7 in 7 plus 7 plus 7?

• Associative Property

• Commutative Property

• Distributive Property

• Identity Property

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CCSS.6.NS.B.4

What is the result of factoring out the 7 in 7 plus 7 plus 7?

• 1 plus 1 plus 1

• 7 times 3

• 3 times 7

• 7 times 7

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CCSS.4.NBT.B.6

What does 1 plus 1 plus 1 equal in the context of the distributive property?

• 4

• 3

• 2

• 1

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CCSS.6.NS.B.4

What should you say when someone claims repeated addition is multiplication?

• That's the associative property.

• That's the commutative property.

• That's the identity property.

• That's the distributive property.

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CCSS.3.OA.D.9

How does thinking of multiplication in terms of the distributive property benefit you?

• It makes you sound smart.

• It helps you with addition.

• It makes you actually smart.

• It simplifies math problems.

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CCSS.7.NS.A.2C