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Multiplication can be defined in the following way: Assume that you have a number (where can be any number). If you add to itself times, that can be written like this:
This can be tiresome in the long run, especially when becomes large. That’s where multiplication enters the picture. By definition, the sum above can also be written like this:
This means that added to itself times is the same as multiplied by .
The numbers that are multiplied together are called factors, and the answer is called a product.
This might look a little odd—it might not be how you learned about multiplication before. So here’s an example to clarify.
You want to add 3 to itself 5 times
This can be written as
but if you use the definition above, it can also be written as
Multiplication problems with whole numbers (integers) between 1 and 10 are organized in the times tables. You should learn this table by heart.