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Because that's how the addition and multiplication functions were defined.

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Q: Why do traditional ways of to add and multiply numbers work?
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Related questions

Why do the traditional ways to add and multiplty numbers work?

That's a simple case of evolution, survival of the fittest, natural selection, etc. The ways that were tried and didn't work never lasted long enough to become traditional.


How do you work out products of prime numbers?

You multiply them.You multiply them.You multiply them.You multiply them.


How do you work out the prime factors of a number?

1. Find out which numbers multiply together to reach the target number, then find out which numbers multiply together to make the numbers that multiply together to reach the target number.


What can you do if the fraction you have can not be easily be converted?

if your numbers arent whole numbers then multiply them out until they are whole numbers that are easier to work with.


How do you work a multiplication problem?

You multiply two (or more) numbers together.


How do you multiply two negative numbers and a positive number?

you work left to right


What adds to 7 and multiples to 294?

There are no two real numbers that do, but two complex numbers do: (3.5 + i 3.5 √23) and (3.5 - i 3.5 √23) If you want them to add to 7 and multiply to -294, then the two real numbers -14 and 21 work. Or if you want them to add to -7 and multiply to -294, then the two real numbers 14 and -21 work. To add to -7 and multiply to 294, the following two complex numbers work: (-3.5 + i 3.5 √23) and (-3.5 - i 3.5 √23)


How do you work out the three prime numbers to multiply which makes 231?

As a product of its prime numbers: 3*7*11 = 231


How do i work out a percentage difference between 2 numbers?

Turn them into a fraction and then multiply it by 100


How do you work out the product of prime factors?

Multiply prime numbers or prime factors to find their product.


How do you work out 14x16?

To multiply 14 by 16, you would first multiply the two numbers without considering the place value. So the result is 224.


What are to consecutive odd numbers is 399?

If you are wanting to add odd numbers to get 399, it won't work. If you are wanting to multiply to get 399, it is 19 x 21.