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Positive and Negative Numbers. 4 3 2 1 0 -2 -3 It is 2 o C The temperature drops by 3 degrees What temperature is it now? -1 o C.

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Presentation on theme: "Positive and Negative Numbers. 4 3 2 1 0 -2 -3 It is 2 o C The temperature drops by 3 degrees What temperature is it now? -1 o C."— Presentation transcript:

1 Positive and Negative Numbers

2 4 3 2 1 0 -2 -3 It is 2 o C The temperature drops by 3 degrees What temperature is it now? -1 o C

3 4 3 2 1 0 -2 -3 It is 4 o C The temperature drops by 5 degrees What temperature is it now? -1 o C

4 4 3 2 1 0 -2 -3 It is -2 o C The temperature rises by 3 degrees What temperature is it now? +1 o C 4 3 2 1 0 -2 -3 4 3 2 1 0 -2 -3 4 3 2 1 0 -2 -3

5 It is 10 o C The temperature drops by 15 o C What is the temperature now? -5 o C 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15

6 It is 15 o C The temperature drops by 20 o C What is the temperature now? -5 o C 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15

7 Definition Positive number – a number greater than zero. 0123456

8 Definition Negative number – a number less than zero. 0123456-2-3-4-5-6

9 Definition Opposite Numbers – numbers that are the same distance from zero in the opposite direction 0123456-2-3-4-5-6

10 Definition Integers – Integers are all the whole numbers and all of their opposites on the negative number line including zero. 7 opposite -7

11 Negative Numbers Are Used to Measure Under Sea Level 0 10 20 30 -10 -20 -30 -40 -50

12 Negative Numbers Are Used to Show Debt Let’s say you borrowed $5 from your friend, that means you owe your friend $5. You have -$5

13 Positive & Negative Numbers Working with positive and negative numbers is like driving in traffic. You have to watch the traffic signs and follow the driving rules.

14 Hint If you don’t see a negative or positive sign in front of a number it is positive. 9 +

15 Word Clues Positive Gain Increase Received Got Greater Negative Below Loss Lost Owe less

16 You try: Write this Number Ten degrees below zero I owe you $83 I lost 28 marbles I earned 3 new DS games for getting all fours on my report card.

17 Compare positive and negative numbers 0123456-2-3-4-5-6 -4 4 Remember Positive numbers are always bigger than negative numbers.

18 Compare positive and negative numbers 0123456-2-3-4-5-6 -5 -1 Remember Positive numbers are always bigger than negative numbers.

19 Compare positive and negative numbers 0123456-2-3-4-5-6 -9 0 Remember Positive numbers are always bigger than negative numbers.

20 Compare positive and negative numbers 0123456-2-3-4-5-6 -13 -26 Remember Positive numbers are always bigger than negative numbers.

21 Compare positive and negative numbers 0123456-2-3-4-5-6 6 -8 Remember Positive numbers are always bigger than negative numbers.

22 Great Job! Page 19 # 10-18 Tues Page 21 #3-6 Wed

23 Fill in the number line with positive and negative numbers 0

24 >, < or = -4 4 6 -8 -13 -26 -9 0

25 What temperature is 10 degrees colder than -5 What temperature is 10 warmer than -5 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15 20 15 10 5 0 -5 -10 -15

26 Order the numbers from least to greatest 4, -4, 2, 0, -1 -7, 3, -5, 2, 7


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