Lesson 2.8 Dividing Real Numbers Mr. Beltz & Mr. Sparks

Goal Divide real numbers and use division to simplify algebraic expressions.

Reciprocals: Fractions Two numbers whose product is 1. (POSITIVE) (-½) (- 2 / 1 ) = 1 Remember the rules for negatives. ( 1 /3) ( 3 / 1 ) = 1 ( 1 / 4 ) ( 4 / 1 ) = 1 *The reciprocal of the fraction is in blue.

Reciprocals of Whole Numbers Remember, whole numbers are understood to have a denominator of: 1 10 = 10/1 4= 4/1 15= 15/1 *The reciprocal of the fraction is in blue.

Rules for Division 1 st Change Division to Multiplication 2 nd Take the Reciprocal of the next number. 3 rd Solve using multiplication.

Example 10 / (-2) = Change Division to Multiplication Take the Reciprocal of the next number 10 * (-½) = -5 Remember our rules for Negatives.