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Math K-Plus

Multiplying Integers Rules

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What Are The Rules For Multiplying Integers


Before we begin, here are the rules for Multiplying Integers:
  • If the sign of two multiplied numbers are the same, the multipled result will have a positive sign.
  • If either sign of two multiplied numbers are different, the multipled result will have a negative sign.

Multiplying integer examples:

  • Multiplying Positive Numbers:
    Tip: A positive (+) times a positive (+) always equals a positive (+)
    (a) +5 × +1 =
        5 × 1 = +5 = 5


  • Multiplying Negative Numbers:
    Tip: A negative (-) times a negative (-) always equals positive (+)
    (a) -5 × -1 = +5 = 5

  • Multiplying Numbers With Different Signs:
    Tip: A negative (-) times a positive (+) always equals negative (-)
    (a) -5 × +1 =
        -5 × 1 = -5


    Tip: A positive (+) times a negative (-) always equals negative (-)
    (b) +5 × -1 =
        5 × -1 = -5


Here is more on how to use signed numbers: