Multiplication and division of integers

Multiplication of Integers

(+) × (+) = +Plus x Plus = Plus
(+) x (-) = –Plus x Minus = Minus
(-) × (+) = –Minus x Plus = Minus
(-) × (-) = +Minus x Minus = Plus
  • Product of a negative integer and a positive integer is always a negative integer.
    •  10 \times -2 = -20
  • Product of two negative integers is a positive integer.
    •  -10 \times -2 = 20
  • Product of even number of negative integers is positive.
    • \left( { - 2} \right) \times \left( { - 5} \right) = 10
  • Product of an odd number of negative integers is negative.
    •  \left( {-2} \right) \times \left( { -5} \right) \times \left( 6 \right) = -60

Dividing Integers

  • (positive integer/negative integer) or (negative integer/positive integer)
    ⇒ The quotient obtained is a negative integer.
  • (positive integer/positive integer) or (negative integer/negative integer)
    ⇒ The quotient obtained is a positive integer.
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