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1	Write the numbers below in the correct boxes. Write your answer with commas between the numbers like this: Even Numbers Odd Numbers
2	Work out the rule and fill in the missing numbers.
3	In the diagram below, each shape represents a different number from 10, 20, 30, 40, 50, 60, and 70. Each number in the middle is the sum of the four numbers around it. Fill in the missing numbers:
4	Fill in the numbers missing from the snakes below. Write the rule in the snake's head. e.g. if 9 was added on between each number you would write +9 in the snake's head. (a)
	(b)
5	Join up the equal amounts. To link two pencils, click in the circles next to the pencils. To remove a link which you already made, click on one of the circles at the ends of the link.