**The following activity is a practice exercise to help you measure your success under timed conditions. **

**If you are unsure of an answer move on to the next question. You should come back to questions you found difficult at the end if you have time. **

Can you work out which number comes next in this sequence?

**2, 3, 5, 7, __**

The missing number is **11**.

This is a sequence of **prime numbers** and 11 is the next prime number after 7.

**Prime numbers** are numbers that can only be divided by 1 and themselves.

**Now it's time to begin this practice exercise. Good luck!**