** The Main Challenge**

Test your knowledge of number combinations by listing the SIX different ways of making **20** when adding together five unique digits from **1 to 9** in this *Kakuro*-style question.

**The 7puzzle Challenge**

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

The 1st & 3rd rows contain the following fourteen numbers:

2 9 13 14 15 22 25 36 40 42 45 66 72 80

Can you find FIVE sets of three different numbers, all of which have a sum of 100?

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

**The Mathematically Possible Challenge**

Using **4**, **7** and **11 **once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

4 8 12 16 20 24 28 32 36 40

#*4TimesTable*

**The Target Challenge**

Can you arrive at **310** by inserting **1**, **2**, **3**, **4** and **5** into the gaps below?

- (◯³+◯–◯–◯)×◯ = 310

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

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