Simple Integer Rules

What do you get when you multiply a negative by a positive?

• Positive
• Negative

What do you get when you multiply a negative by a negative?

• Positive
• Negative 

What do you get when you multiply a negative by a negative?

• Positive
• Negative 

What do you get when you divide a negative by a negative?

• Positive
• Negative

What do you get when you multiply a negative by zero?

• Positive
• Negative
• Zero

When multiplying or dividing a NEGATIVE and NEGATIVE number your result will be...

• POSITIVE
• NEGATIVE
• DEPENDS ON WHICH NUMBER IS LARGER.

When multiplying or dividing a NEGATIVE and POSITIVE number your result will be...

• Positive
• Negative
• Depends on which is bigger.

subtracting integers (phrase to help you remember what to do)

• "Don't get mad! Just add!"
• "add a line, change the sign" means change subtraction sign to an addition sign and change the sign of the integer following it to its opposite
• "If your bag is packed, you don't have to subtract!"

subtracting integers (rule)

• subtract their absolute value; keep the sign of the integer with the higher absolute value
• add their absolute value and keep the sign of the integers
• change subtraction sign (between the integers) to an addition sign and change the sign of the integer following it to its opposite (if it was positive, make it negative; if it was negative, make it positive); then solve

adding integers with DIFFERENT signs

• subtract their absolute value; keep the sign of the integer with the higher absolute value
• add their absolute value and keep the sign of the integers
• change subtraction sign (between the integers) to an addition sign and change the sign of the integer following it to its opposite (if it was positive, make it negative; if it was negative, make it positive); then solve