At **7puzzleblog.com**, we produce regular number puzzles for our many followers from all corners of the globe (see our visitors map immediately on the right). Our aim is to help improve basic knowledge and confidence of number & arithmetic in a fun way.

Please enjoy your visit and spread the message about the fabulous number puzzles at **7puzzleblog.com**. Have a go at the four challenge below at **#37**. You can also follow me and my tweets on *twitter* **@7puzzle**.

Click **this link** if you wish to find out more about our main school-based maths workshops, **the 7puzzle experience**.

**Paul Godding, **Director of** the 7puzzle company**