Comparing and ordering numbers

problem
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Light the Lights

Age

5 to 7

Challenge level

2 out of 3

Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
problem
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100 Square Jigsaw

Age

5 to 11

Challenge level

1 out of 3

Can you complete this jigsaw of the 100 square?
problem
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Venn Diagrams

Age

5 to 11

Challenge level

1 out of 3

How will you complete these interactive Venn diagrams?
problem
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Dotty Six

Age

5 to 11

Challenge level

1 out of 3

Dotty Six is a simple dice game that you can adapt in many ways.
problem
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Largest Even

Age

5 to 11

Challenge level

1 out of 3

How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?
problem
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Carroll Diagrams

Age

5 to 11

Challenge level

1 out of 3

Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
problem
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That Number Square

Age

5 to 11

Challenge level

1 out of 3

Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?
interactivity
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Interactive Balance

Age

5 to 11

Challenge level

1 out of 3

In this simulation of a balance, you can drag numbers and parts of number sentences on to the trays. Have a play!
interactivity
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Dominoes Environment

Age

5 to 16

Challenge level

1 out of 3

These interactive dominoes can be dragged around the screen.
problem
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Which Scripts?

Age

7 to 11

Challenge level

1 out of 3

There are six numbers written in five different scripts. Can you sort out which is which?