The Beforetimers were rumoured to have loved puzzles in any shape and form. These were found in a little book in the Tailard Observatory. Have a go!

**Try to fill in the missing numbers.**

Each number is only used once. Each row is a math equation. Each column is a math equation. Remember that multiplication and division are performed before addition and subtraction.

### Easy

*Use the numbers 1 to 9.*

### Medium

*Use the numbers 1 to 16.*

### Hard

*Use the numbers 1 to 25.*

#### ~ To enter this competition ~

To enter, please type the solution as follows:

1 2 3

4 5 6

7 8 9

(E.g. for the easy puzzle)

Points will be given for complete, correct answers only. No participation points will be awarded.

**Remember to type 'Mathematical Viewpoint' in the subject box so that your entry is sorted correctly.**