Describe the rules to adding and subtracting integers Do Now Describe the rules to adding and subtracting integers
Lessons 6 and 7 Objective: Multiply and divide integers Chapter 3 Lessons 6 and 7 Objective: Multiply and divide integers
SIMPLE RULE MULTIPLY or DIVIDE as usual Same signs (+) answer Different signs (-) answer
Here we go! 3(-5) -15 -6(8) -48 -11(-9) 99 (-4)^2 16
Let’s tie in algebra! Simplify -2(3x) -6x Simplify -5(2y) -10y Simplify (2x)(-3y) -6xy Simplify (-5x)(-2y) 10 xy
A little more algebra! Evaluate pqr if p = -3, q = 4, and r = -1 (-3)(4)(-1) (-12)(-1) 12 Evaluate xyz if x = -7, y = -4, z = 2 (-7)(-4)(2) (28)(2) 56
Try some on your own Page 136 numbers 15-43 odd
Easy Stuff Lets Start Dividing! Same rules apply Same sign positive answer Different sign negative answer
Lets divide -72 ÷ 8 -9 -12 ÷ -4 3 -36 ÷ -2 18 -12 ÷ 4 -3
Here are some more! -55 11 -5 -81 9 -9 -45 5
Let’s tie in Algebra! R = 12 s = -4 t = -6 72 ÷ t -12 RS ÷ 16 -3 t squared ÷ R 3
Numbers 19-31 odd numbers only Your turn Page 140 Numbers 19-31 odd numbers only
Your homework Page 136 numbers 14-42 even Page 140 numbers 14-42 even Practice test STUDY FOR TEST TUESDAY!!!