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5.05 Multiply by 3

Lesson

Are you ready?

Can you write repeated addition as a multiplication number sentence? Try this question.

Write this addition as a multiplication.

$10+10+10$10+10+10

 

Learn

Let's look at how to triple or multiply numbers by 3.

Apply

$3\times6$3×6

 

Remember!

Multiplying by three is the same as tripling and can be thought of as the total of three equally sized groups.

Outcomes

3.OA.C.7

Fluently multiply and divide within 100, using strategies such as the properties of operations or the relationship between multiplication and division (e.g., knowing that 8 x 5 = 40, one knows 40 ÷ 5 = 8). By the end of 3rd grade, know all products of two one-digit numbers and related division facts.

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