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Integer Op. Rules

Rules for doing the different integer operations

QuestionAnswer
Add two positive integers Add the numbers and the result is positive
Add two negative integers Add the numbers and the result is negative
Add a positive integer and a negative integer Subtract the numbers and use the sign of the bigger* number (the number with the larger absolute value
Add a negative integer and a positive integer Subtract the numbers and use the sign of the bigger* number (the number with the larger absolute value
Add opposite integers The sum will always be 0
Add a positive integer and 0 The sum will be the same positive integer
Add a negative integer and 0 The sum will be the same negative integer
Subtract a positive integer minus a smaller positive integer This is the same as adding a positive integer and a smaller negative integer. Subtract the numbers and the result will be positive.
Subtract a positive integer minus a larger positive integer This is the same as adding a positive integer and a "larger" negative integer. Subtract the numbers and the result will be negative.
Subtract a positive integer minus a negative integer This is the same as adding a positive integer and a positive integer. Add the numbers and the result will be positive.
Subtract a negative integer minus a positive integer The is the same as adding two negative integers. Add the numbers and the result will be negative.
Subtract a negative integer minus a negative integer This is the same as adding a negative integer and a positive integer. Subtract the numbers and use the sign of the bigger* number (the number with the larger absolute value
Subtract an integer minus the same integer This will be the same as adding opposite integers and the result will be 0.
Multiply a positive integer by a positive integer Multiply the two numbers and the result (product) will be positive.
Multiply a positive integer by a negative integer Multiply the two numbers and the result (product) will be negative. (it doesn't matter if the "bigger" number is positive or negative)
Multiply a negative integer by a positive integer Multiply the two numbers and the result (product) will be negative. (it doesn't matter if the "bigger" number is positive or negative)
Multiply a negative integer by a negative integer Multiply the numbers and the result (product) will be positive.
Multiply a positive or a negative integer by 0 The product will always be 0
Divide a positive integer by a positive integer Divide the numbers and the result (quotient) will by positive.
Divide a positive integer by a negative integer Divide the two numbers and the result (quotient) will be negative.
Divide a negative integer by a positive integer Divide the two numbers and the result (quotient) will be negative.
Divide a negative integer by a negative integer Divide the two numbers and the result (quotient) will be positive.
Divide 0 by any integer The quotient will be 0.
Divide any integer by 0 This cannot be done. The quotient is said to be "undefined".
Created by: mrvanlaan