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Instant SubtractionsInstant Subtractions

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For example 1000-283=717

We simply subtract all the digits from 9 and subtract the last one from 10.Hence the

formula is called All from 9 and last from 10.All from 9 and last from 10.

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1 0 0 0 - 2 8 3

Subtract from 9

Subtract from 9

Subtract from 10

= 7 1 7

So our answer is 1000-283=717

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All from 9 and last from 10 All from 9 and last from 10 always works for always works for subtractions from numbers consisting of subtractions from numbers consisting of powers of 10 like 100,1000,10,000 etcpowers of 10 like 100,1000,10,000 etc

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1 0 0 0 0 - 2 1 5 6

Subtract from 9

Subtract from 9

Subtract from 9

= 7 8 4 4

So our answer is 10000-2156=7844

For example 10000 -2156 = 7844

Subtract from 10

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For 10000 – 76 in which we have more zeroes than figures in the numbers being

subtracted, we simply assume that 76 is 0076 and then subtract.

So 10 000 – 76 becomes 10 000 – 0076 = 9924

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SumsSums

• 1000-367• 10000-7459• 100-23• 10000-625• 1000-37

• 1000-458• 10000-9989• 1000-258• 100-69• 10000-1456

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Answers

• 633 • 2541• 77 • 9375• 963

• 542• 11• 742• 31• 8544