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.

Multiply two whole numbers from 0 to 12 and divide using related facts with procedural reliability.