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

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

$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.

Fluently multiply and divide.

Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division or properties of operations.

By the end of Grade 3, know from memory all products of two one-digit numbers.