Operations with Signed Numbers
Rules for Multiplying Integers
The product of two integers with the same sign is found by multiplying their absolute values. The product is positive.
The product of two integers with different signs is found by multiplying their absolute values. The product is negative.
The product of 0 and any integer is 0.
IN07 Multiplying and Dividing Positive and Negative Integers
IN13 Signed_Multiply and Divide
Squaring is the same as raising to the power 2 (is the result of multiplying a number by itself), and is denoted by a superscript 2; for instance, the square of x may be written as x2
52 = 5 x 5 = 25
When multiplying and dividing integers, every two negative signs cancel each other out.
If you have an even number of negative signs, your answer is positive.
If you have an odd number of negative signs, your answer is negative.