In this activity, we will learn about multiplying by 4.

To multiply by four, we can use **repeated addition.**

Here is a cow. One cow has **4** legs.

Let's think about what happens if we have 5 cows, each with 4 legs and we want to find the total number of legs!

We could count the legs one by one but this would take a while!

Instead, let's use repeated addition to show the total.

5 groups of 4 looks like this as repeated addition

4 + 4 + 4 + 4 + 4 = 20

There are 20 legs in total!

Now let's try an example of multiplying by 4, using repeated addition.

**Example**

Here are 4 cows. They each have 4 legs. How many legs in total?

**Answer**

In total, there are 4 + 4 + 4 + 4 = 16 legs.

What is 4 times 4?

4 × 4 = **16**

Now that you understand repeated addition, let's try some questions.