Add and Subtracting Positive and Negative Numbers

When adding integers with the same sign you ________________.

• Subtract and keep the sign of the larger number.

• Add and keep the sign.

A negative PLUS a negative will give you what on your final answer.

• Positive

• Negative

-6 + 4 =

• -2

• 2

• 10

• -10

What are the rules for subtracting integers?

• Change to multiplication and use the opposite of the second number.

• Change subtraction sign to addition and use the opposite of the second number.

• Find the opposite of both numbers and then add. 

• Subtract like normal and keep the larger sign. 

When we are adding, the rule for numbers with the same sign is...

• same signs subtract

• same signs add and keep

• same signs positive

• same signs negative

When we are adding numbers with different signs, we follow the rule of...

• different signs subtract

• different signs positive

• different signs add and keep

• different signs negative

Which is the rule for subtraction of integers?

• same sign sum

• different sign difference

• add the opposite

  (Keep, change, change)

• just subtract

 2 - (- 2).... it is the same as 

• 2 - 2

• 2 + 2

• 2 + -2

• 2 - +2

Express an integer: a withdrawal of $100

• 100

• -100

Evaluate:  -19 -10

• 9

• -9

• -29

• 29