5.03 Multiply by 4

Lesson

Are you ready?

Multiplication looks at equally sized groups. Doubling means multiplying equally sized groups by $2$2. Can you solve this problem?

$9\times2$9×2

4 groups is twice (two times) as many as 2 groups. Let's look at how to multiply numbers by 4.

$4\times4$4×4

Remember!

To solve questions with $4$4 times tables, you can use the Double, Double strategy. That means you double the number, then double the answer.

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.