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Number Round Up

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

Number Detective

Follow the clues to find the mystery number.

Grouping Goodies

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

Venn Diagrams

Age 5 to 11 Challenge Level:

Can you place the numbers from $1$ to $40$ into this Venn diagram?
How do you know where to put each number?
You might like to print off this sheet if you do not want to use the interactivity.

Full screen version

Here is another one for you to try. If you'd prefer to work on paper, print off this sheet.

Full screen version