Calling all number detectives!

Look at this symbol:

We know it is the **equals** sign but what does it actually mean?

It means** the same as** and doesn’t just mean the answer.

Look at the following calculation:

**19 = 7 + __**

One of the numbers is missing.

So **19** is the same as** 7 add something.**

Now we have two options, we can** count on from 7 to 19** or **take away 7 from 19 **to work out the missing number.

Following either of these options, we find that the missing number is **12**.

**19 = 7 + 12**

Let’s try another:

**17 = 20 - __**

In this question, the answer of **17 is the same as 20 take away something.**

What do we need to take away from** 20** to reach **17**?

The missing number is **3**.

**17 = 20 - 3**

Pssstt!! Here’s a handy hint to help you reach superstar status:

Remember that equals means **the same as** and the answers on either side of the equals sign must be the same.

In this activity, you will be completing sums by finding the missing number.

Good luck!