Rules for signs

 Rules for signs

Addition Rules

The following are the addition rules for integers:

• Addition of two positive integers is a positive integer
• 2+2 = 4
• Addition of two negative integers is a negative integer
• -2 + (-2) = -4
• While adding positive and negative integer, subtract the integers and use the sign of the largest integer number
• 2 + (-2) = 0

• Subtraction Rules

  The following are the subtraction rules for integers:

  • If both the signs of the integers are positive, the answer will be the positive integer
  • 3 – 2 = 1
  • If both the signs of the integers are negative, the answer will be the negative integer
  • If the signs of the integers are different, subtract the values, and take the sign from the largest integer value.

  • Multiplication Rules

    The following are the multiplication rules for the integers.

    • The product of two positive integers is a positive integer
    • The product of two negative integers is a positive integer
    • The product of positive and negative integer is a negative integer

    • Division Rules

      The following are the division rules for integers:

    • The division of two positive integers is a positive integer
    • The division of two negative number is a positive integer
    • The division of integers with different signs results in the negative integer.

    • Type of Numbers	Operation	Result	Example
      Positive + Positive	Add	Positive (+)	10 + 15 = 25
      Negative + Negative	Add	Negative (-)	(-10) + (-15) = -25
      Positive + Negative*	Subtract	Positive (+)	(-10) + 15 =5
      Negative + Positive*	Subtract	Negative (-)	10 + (-15)= -5