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Instead of having to do multiples of two numbers with several digits in each, all you need to be able to do is to multiply pairs of 1 digit numbers, add the correct number of 0s for powers of tens, and then add together a string of numbers.

Actually, all that sounds a lot more complicated than it is. It may be easier to explain with an example:

567*89

Adding Partial products: (500*80 + 500*9 + 60*80 + 60*9 + 7*80 + 7*9)

= 40000 + 4500 + 4800 + 540 + 560 + 63

= 50463

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Q: How does adding partial products help slove multipcation problem?
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