Stage: 1 and 2 Challenge Level: 
Can you place the numbers from $1$ to $40$ into this Venn diagram?
How do you know where to put each number?
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Here is another one for you to try. If you'd prefer to work on paper, print off this sheet .
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Games. Odd and even numbers. Visualising. Interactivities. Comparing and Ordering numbers. Practical Activity. Venn diagrams. Factors and multiples. Tangram. Compound transformations.
Published September 2007.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk
