**The Main Challenge**

Your task is to make all four lines below work out arithmetically by placing digits from **0 to 9** into the 16 gaps, but each digit can only be used a maximum of twice!

Can you complete this **Mathelona** challenge?

◯ + ◯ = 9 = ◯ + ◯

◯ + ◯ = 3 = ◯ – ◯

◯ + ◯ = 8 = ◯ × ◯

◯ + ◯ = 2 = ◯ ÷ ◯

**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 1st & 5th rows contain the following fourteen numbers:

2 6 7 9 14 15 16 21 22 40 50 72 81 84

What is the sum of the multiples of 7?

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

**The Mathematically Possible Challenge**

Based on our best-selling arithmetic board game.

Using **5**, **8** and **11 **once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

90 91 92 93 94 95 96 97 98 99

#*NumbersIn90s*

**The Target**** Challenge**

Can you arrive at **261** by inserting **1**, **2**, **3**, **4** and **5** into the gaps below?

- (◯×◯×◯)²+(◯+◯)² = 261

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

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