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How do you multiply integers?


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Answered 2017-01-08 01:19:48

Fast addition Okay, this is very easy. If you aren't as good at adding and subtracting, you'll be a pro at multiplying and division.

Here are some helpful hints before we go with the examples:

  • When you have a positive multiplied by a positive your answer will be positive because its the same thing as doing a #x# with no signs. Same as a negative times a negative.

  • When you have a negative times a positive your answer will be negative.

  • You simply JUST multiply, you DON'T due any other "easier ways", it is not like when you subtract, you need to convert the problem to an addition, same applies with addition.

SO LETS START WITH AN EXAMPLE!

Lets say you have 7X-2

First of all, lets multiply normally, simply FORGET the signs.

7X2= 14

Now you can refer back to the signs, and you know that a positive times a negative is a negative so your answer is: -14, and that's no matter how far from zero the number is

Lets try one more!

5X10

Remember their both positive so its a normal multiplication problem.

YOUR PROBLEM AND ANSWER IS: 5X10=+50

Well, you could use basic math (like 2 x 2 = 4). If you don't know these, you might want to learn them or use a calculator for right now.

If it is like 34 x 32, then you treat it like:

(30 x 32) + (4 x 32)

which is equivalent to

(30 x 30) + (30 x 2) + (4 x 30) + (4 x 2)

and I hope that you would be able to solve that.

well if the problem is like 2(integer 5) X 7(integer 2) =_________

1.You do 2Xthe integer 5=10

2.Do 7Xthe integer 2=14

3.Then you do 10X14

4.Which equals 140

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