Note Review: Adding and Subtracting Integers

A negative number is

• The distance a number is from zero.

• Any integer greater than zero.

• A number that is less than zero.

• A whole number that can be greater than zero or less than zero.

A positive number is any

Absolute value

• the distance a number is from zero on a number line.

• A number that is less than zero

• Any integers greater than zero

• There is no going back

10 miles below sea level is

• +10

• -10

• 100

• A really scary place

1200 feet above sea level is

• -1200

• Close to the sky.

• 1200

• In the mountains.

• 4

• -4

• 40

• Why is the number in those funny lines?

• What does this mean?

• -9

• 99

• 9

Adding integers with the same sign:

• Subtract

• Add and keep the sign.

• Add and that is it.

• What is adding integers?

Adding integers with different signs

• Subtract and keep the sign of the BIGGER number!

• Subtract and keep the number of the smaller signs.

• Adding integers is hard!

• Subtract and do not change the signs!

• 19

• -3

• 3

• -19