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Multiplying large numbers

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by Maths Doctor

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10.15.2020

If you have a large number to multiply and one of the numbers is even, you can easily subdivide to get to the answer:

So if we take 32 x 125

we can see that it is the same as:

16 x 250

which is the same as

8 x 500 which is the same as

4 x 1000, a nice easy sum for you to approach with confidence.

So 32 x 125 = 4,000

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