Lesson 3-7 Dividing Integers

Objective: To be able to divide positive and negative integers. Standard: Number SenseIndicator(s): N5 Explain the meaning and effect of adding, subtracting integersN6 Simplify numerical expressions involving integers and use integers to solve real-life problems.N8 Develop and analyze algorithms for computing with percents and integers, and demonstrate fluency in their use.

You can divide any two numbers whether they are

(+) or (-).

Example -12 ÷ 6= ? Think, 12 ÷ 6 = 2. After you have completed your division,

concentrate on the positive & negative signs.

Here is the system for dividing integers… positive ÷ negative = negative negative ÷ positive = negative negative ÷ negative = positive positive ÷ positive = positive

Reminder: Integers are any whole number that is positive or negative. You can divide integers in an equation.

So, -12 ÷ 6= -2because… negative ÷ positive= negative

1. 25 ÷ (-5)=

2. 8 ÷ 2=

3. (-18 · 2) 4. -6 5. -27 6. 42

(-4) 3 -9 -8

With Variables

1. -7b(-3) 2. 16a+(-4a) -3 -6

3. -4x 4. 6a +(-24b) 2 -3

Homework

3-7Pg. 140-141#19-33 o, 40-49 all