 Add and Subtracting Positive Numbers. Positive Number- A number greater than zero 01 2345.

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Presentation transcript:

 Add and Subtracting Positive Numbers

Positive Number- A number greater than zero

Negative Numbers- A number that is less than zero

Absolute Value- The distance of a number from 0 on a number line |3| = 3 |-1|= 1 |-5| = 5

Opposite Numbers- Numbers whose values add up to

Integers- Integers are all of the whole numbers and all of their opposites on a number line including 0 Definition

Hint  If you do not see a sign attached to a number, the number is positive  Ex: 9 = +9

Addition of Integers Rule #1  If the signs are the same, pretend the signs aren’t there. Add the numbers and then put the sign in front of your answer.

Solve  =  =  (+4) + (+3) =  =  =

Addition of Integers Rule #2  If the signs are different, pretend the signs aren’t there. Subtract the larger number from the smaller number and then put the sign of the larger number in front of your answer.

Solve  =  =  =  =  =  =  =

Using A Number Line

Subtracting Negative Numbers  When you subtract a negative number it is simply the same as adding a positive number.  Ex: = = -1  = 12

Solve  =  =  =  =  =  =