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| − | [[Multiplication]] is in math when you multiply two numbers together to get a third number that is bigger than the first one by the second one amount of times. For example, 2 times 3 is 2+2+2 is 6. This also works the other way: 3+3 is 6 also. This is called being [[commutative]].
| + | '''Multiplication''' is a mathematical operation. Multiplication of positive integers is the same as repeated addition. You multiply two numbers together; that is, multiplication is always performed on two ''operands.'' The result is a third number Multiplication is repeated addition. For example: |
| | + | *3 times 2 = 2 added three times = 2 + 2 + 2 = 6. |
| | + | This also works the other way: |
| | + | *2 times 3 = 3 added two times = 3 + 3 = 6. |
| | + | 2 x 3 = 3 x 2, regardless of the order of the operands. It is said that multiplication is [[commutative]]. |
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| | Multiplication is mentioned in the [[Bible]] when God tells [[Noah]] to go forth and [[multiplication|multiply]]. (Joke! Really that is a different kind of multiplication.) However, Noah did have to use multiplication when he made the [[ark]], because [[Genesis]] 6:15 says: | | Multiplication is mentioned in the [[Bible]] when God tells [[Noah]] to go forth and [[multiplication|multiply]]. (Joke! Really that is a different kind of multiplication.) However, Noah did have to use multiplication when he made the [[ark]], because [[Genesis]] 6:15 says: |
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| | So Noah knew the [[ark]] had to be a volume of 300 times 50 times 30 is 450000 cubics<sup>3</sup>, to fit two of all the animals in the world in it. | | So Noah knew the [[ark]] had to be a volume of 300 times 50 times 30 is 450000 cubics<sup>3</sup>, to fit two of all the animals in the world in it. |
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| − | Multiplication is sometimes confusing because teachers use the letter x to mean multiply, but then sometimes x means like a number, as in Solve for x. | + | Multiplication is sometimes confusing because the symbol for multiplication is very similar to the letter x; but the letter x can also stand for a variable in algebra, as in "solve for x." In printed material, slightly different symbols are used for the letter x and the multiplication symbol ×. |
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| | ==See also== | | ==See also== |
| | *[[Multiplication Property of Equality]] | | *[[Multiplication Property of Equality]] |
| | *[[Math]] | | *[[Math]] |