Essential Ideas
Section 2.4: Multiplication of Integers

  • Procedure for Multiplying Integers

    Summarizing the procedure for multiplying two integers, we first look at the signs of the numbers. If the signs are different, the product is negative. If the signs are alike, the product is positive.

    Flowchart for the multiplication of two nonzero integers

  • Opposite Property
    (-1)n = -n                                                  

    Negative one times a number is the opposite of that number.