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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.

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Grouping Goodies

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

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What Number?

I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.

Light the Lights

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2
How will you keep track of what happens with each number you try?
You might find a hundred square useful.