**Today’s Challenge**

. . . is a number trail involving ten arithmetical steps. You can time yourself, but more importantly be careful with your calculations. No calculators please!

Start with the number 40, then:

- multiply by 4
- +10%
- subtract 15
- divide by seven
- add nine
- 1/2 of this
- +87
- double this
- –96
- ÷10

What is your final answer?

**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 & 4th columns of the playing board contain the following fourteen numbers:

3 6 13 20 21 22 27 42 55 56 60 63 72 77

What is the product of the highest number and lowest number?

**Make 330 Challenge**

Can you arrive at 330 by inserting 3, 5, 10, 11 and 15 into the gaps below?

◯×◯×(◯–◯–◯) = 330

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

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