**Today’s Challenge**

Can you place the 16 numbers 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 9 into the 16 gaps below so all four lines work out arithmetically?

◯ + ◯ = 9 = ◯ + ◯

◯ + ◯ = 7 = ◯ – ◯

◯ + ◯ = 12 = ◯ × ◯

◯ + ◯ = 6 = ◯ ÷ ◯

If you enjoyed this number puzzle, click **MATHELONA** for details of similar challenges.

**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 2nd & 5th rows of the playing board contain the following fourteen numbers:

6 7 8 16 17 21 28 48 50 55 63 64 81 84

What is the sum of the square numbers?

**Make 102 Challenge**

Can you arrive at 102 by inserting 3, 4, 6 and 10 into the gaps on both lines?

- (◯+◯+◯)×◯ = 102
- ◯²+◯×◯÷◯ = 102

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

**Click Paul Godding for details of online maths tuition. Wherever you are in the world, please get in touch.**