Two Dice

Find all the numbers that can be made by adding the dots on two dice.

Biscuit Decorations

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

Writing Digits

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

Find the Difference

Stage: 1 Challenge Level:

Place the numbers $1$ to $6$ in the circles so that each number is the difference between the two numbers just below it.

Example:   $5 - 2 = 3$

You could try it in this interactivity.

When you have tried this and got more than one answer you could try other things like having $4$ rows of discs and use the number $1$ to $10$

Here is an alternative Flash interactive.
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