** The Main Challenge**

. . . is to arrive at the target number of **18** by adding together five numbers from **1 to 5**, which can each be used any number of times in a calculation.

One way of making **18** is 5+5+5+2+1 (or 55521 to save time). Can you list the other EIGHT ways?

**T****he**** 7puzzle Challenge**

The playing board of **the 7puzzle game** is a 7-by-7 grid of 49 different numbers, ranging from **2 **up to **84**.

The 3rd & 5th rows contain the following fourteen numbers:

6 7 13 16 21 25 36 42 45 50 66 80 81 84

What is half of the highest prime number on the list?

**T****he Factors Challenge**

**The Mathematically Possible Challenge**

Using **2**, **7** and **10 **once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?

8 16 24 32 40 48 56 64 72 80

#*8TimesTable*

**The Target**** Challenge**

Can you arrive at **280** by inserting **7**, **8**, **9**, **10** and **11** into the gaps below?

- ◯×◯×◯÷(◯–◯) = 280

**Answers **can be found **here**.

**Click Paul Godding for details of online maths tuition.**