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THE NUMBER LINE 0123456789-9-8-7-6-5-4-3-2 zero – neither (+) or (-) negative numberspositive numbers.

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Presentation on theme: "THE NUMBER LINE 0123456789-9-8-7-6-5-4-3-2 zero – neither (+) or (-) negative numberspositive numbers."— Presentation transcript:

1 THE NUMBER LINE zero – neither (+) or (-) negative numberspositive numbers

2 a) Name the integer that describes each situation - A gain in weight of 7 pounds - 10 degrees below zero

3 b) Name the coordinates of the points graphed CA T

4 c) Insert the appropriate inequality symbol to make each statement true <<>?? ?

5 Have you ever played rummy? Have you ever played solitaire on the computer?

6 =- 13

7 + + “Neutral Pairs”

8 =1

9 – 8 10 = Change (sign) - Keep Change (operation) Use “keep-change- change” ~ only to change subtraction to addition.

10 - 9 ( 4) + 2 = – - + Keep Change (operation) Change (sign) “Hey, have you ever heard of a double negative in English class?”

11 A football team made the following yardage on five plays: lost 4, gained 16, gained 9, lost 8, and lost 4. What was the net yardage on the 5 plays? – 8 – 4= If you like “keep change change” = = = = + 9 Click here for visual tiles

12

13 What are all of the rules?! (+)(+) = (+) (+)(-) = (-) (-)(+) = (-) (-)(-) = (+)

14 124(3) = means “4 groups of 3” Group 1Group 2Group 3Group 4

15 5(-4) = Group 1Group 2Group 3 Group 4Group means “5 groups of -4”

16 Why is a negative # times a negative # equal to a positive #? 3(-4) = -12 2(-4) = - 8 1(-4) = - 4 0(-4) = 0 -1(-4) = 4 3(4) = 12 2(4) = 8 1(4) = 4 0(4) = 0 -1(4) = -4 -2(4) = -8-2(-4) = 8 ? ?

17 A diver descended a total of 60 feet in 5 equal segments. What integer describes each of his descents? - 60 He “descended.” i.e. below sea level ÷ 5 = -12 Describe what this integer means

18 WORKSHEET: # 1 – 30

19 – 8 – 4 = Back to Slide Show = 9


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