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arithmetic
Maths in a minute: Peano arithmetic
How would you explain the natural numbers to an alien devoid of a number instinct? You could try Peano arithmetic...
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The powers of the multiplication table
Explore the amazing patterns that reveal the powers hidden in the multiplication table!
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Triangular number patterns
There are triangular numbers hiding all over the standard multiplication table! Find out how to discover them in this article!
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Maths around the clock
Are you bored with 1 to 12? Then have a look at these mathematical clock faces!
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Arithmetic billiards
Need to find the least common multiple or greatest common divisor of two numbers? A billiard table of the right proportions holds the answers!
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1012 and other such numbers
If you like playing with numbers, then this one's for you!
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The hidden beauty of multiplication tables
There are some amazing patterns hiding within simple arithmetic.
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Remarkable reversible numbers
Some neat number tricks using numbers read backwards.
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Maths in a minute: Easy 11
Eleven makes multiplication easy.
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Writing the unwritable: up-arrow notation
How to write down unimaginably large numbers using just a few symbols.
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So you think you can add up?
Why do we add fractions the way we do? A very close look at addition reveals the answer — and it also works for negative numbers.
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Maths in a minute: Adding fractions (the easy way)
The Indian way of adding fractions makes things easier (with musical explanation).
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