1 out of 3
How many ways can you find to put in operation signs (+, −, ×, ÷) to make 100?
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Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?
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Imagine a very strange bank account where you are only allowed to do two things...
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Play this game to learn about adding and subtracting positive and negative numbers
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Can you find six numbers to go in the daisy from which you can make all the numbers from 1 to a number bigger than 25?
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Can you crack these cryptarithms?
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How many different differences can you make?
2 out of 3
Aisha's division and subtraction calculations both gave the same answer! Can you find some more examples?
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Charlie and Abi put a counter on 42. They wondered if they could visit all the other numbers on their 1-100 board, moving the counter using just these two operations: ×2 and -5. What do you think?
2 out of 3
The Egyptians expressed all fractions as the sum of different unit fractions. Here is a chance to explore how they could have written different fractions.
