**The Main Challenge**

Read the following facts to work out my identity:

- I am a 2-digit number
- my two digits have a difference of four
- add 13 to me and I become a square number

Who am I?

**The**** 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 2nd & 3rd rows contain the following fourteen numbers:

8 13 17 25 28 36 42 45 48 55 63 64 66 80

What is the difference between the highest and lowest multiples of 5?

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

**The Mathematically Possible Challenge**

Using **8**, **10** and **12 **once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

7 14 21 28 35 42 49 56 63 70

#*7TimesTable*

**The Target**** ****Challenge**

Can you arrive at **291** by inserting **2**, **3**, **3**, **5** and **6** into the gaps below?

- ◯×(◯²×(◯+◯)–◯) = 291

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

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