Integer review. Focus Copy down the notes below on the first page in your composition book (Do not skip lines) Integer: set of whole #’s, including 0.

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Presentation transcript:

Integer review

Focus Copy down the notes below on the first page in your composition book (Do not skip lines) Integer: set of whole #’s, including 0 and their opposite Ex: -3,-2,-1,0,1,2,3,…,63,…295 Opposite: the sum of two opp. #’s is 0 Ex: = = = 0 Absolute Value: a #’s distance from 0 on the # line Ex: |-3| = 3 |3| = 3

ADDING INTEGERS if the signs are the same, ADD and KEEP the signs. Ex: = = = = = -15 if the signs are different, SUBTRACT the two #’s and keep the BIGGER SIGN. Ex: (-8) 7 – 4 = 37 is the larger # 8 – 5 = 3 8 is the larger # = 35 + (-8) = -3

Practice Problems

Individual Work You are going to complete the worksheet given to you by Ms. Kurzel You will put your answers into CPS for your warm up tomorrow

Warm up Finish the Adding Integers Work sheet from yesterday

SUBTRACTING INTEGERS Just remember to K.C.O KeepChangeOpposite 1. Keep the 2. Change the 3. Take the opp. 1 st # the operation sign# of the #’s samefrom – to +after the – *AFTER KCO FOLLOW ADDITION RULES*

Subtracting Integers Examples –5 – 6 5 – (–6) –5 – (–6) 5 – 6

Challenging Problems 6 – (4x)12 – (4 – x)

Partner Work You are going to work with you desk partner to complete the worksheet Turn in your work before you leave MAKE SURE BOTH OF YOUR NAMES ARE ON THE PAPER!

Copy down the notes below Subtracting Integers from yesterday. Turn in your partner work!!!! Multiplying/Dividing Integers If the signs are the same the answer will be POSITIVE If the signs are different the answer will be NEGATIVE 2 x 3 = -2 x 3 = -2 x -3 = 2 x -3 = 18 / 9 = -18 / 9 = -18 / -9 = 18 / -9 =

Focus Have your homework out. I am going to come around and check that you completed it. We will go over five problems before your quiz Remember you can use your flow chart on your quiz so go ahead and get it out. Keep your composition book by your desk during the quiz