How to work out which numbers are multiples of three. A class is asked to find a number from a range between 750 and 800 which is a multiple of three. There is also a demonstration of how to find ...

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Prime numbers are divisible only by 1 and themselves. They serve as the “atoms” of mathematics, capable of decomposing other numbers into factors (like 12 = 2 × 2 × 3). As numbers increase, ...

Threes combine to make sixes, which combine to make twelves, etc. Every time you combine two numbers, the result doubles. Only multiples of three count towards your end score, thus the name of the ...