Integer Operations Flashcards

Front

Integer addition with same signs

Back

Keep the sign. Example: (+) + (+) = +, (-) + (-) = -

Front

Integer addition with different signs

Back

Subtract the smaller number from the larger number and keep the sign of the larger number. Example: (+) + (-) = +, (-) + (+) = -

Front

Integer subtraction rule

Back

Keep the first number, change the subtraction to addition, change the sign of the second number, then use the addition rules.

Front

Multiplication or division with same signs

Back

The answer is positive. Example: (+) \cdot (+) = +, (-) \cdot (-) = +

Front

Multiplication or division with different signs

Back

The answer is negative. Example: (+) \cdot (-) = -, (-) \cdot (+) = -