welcome! please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1...
TRANSCRIPT
![Page 1: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/1.jpg)
2.4and2.5.notebook
1
September 29, 2014
25: Subtracting IntegersWelcome! Please have your homework assignment on your desk.You have 3 minutes to complete the problems below.
5.
![Page 2: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/2.jpg)
2.4and2.5.notebook
2
September 29, 2014
24: Adding IntegersMain Idea: add integersVocabulary:• opposites two integers are opposite if they are represented on the number line by points that are the same distance from zero, but on opposite sides of zero. The sum of two opposites is zero. • additive inverse the opposite of an integer. The of an integer and its additive inverse is zero.
![Page 3: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/3.jpg)
2.4and2.5.notebook
3
September 29, 2014
-8 + 5 = -8 + 5 =
![Page 4: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/4.jpg)
2.4and2.5.notebook
4
September 29, 2014
7 + -5 =
Put colored chips into the "bowl" to represent the equation and then solve.
2Answer
![Page 5: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/5.jpg)
2.4and2.5.notebook
5
September 29, 2014
-6
2 + -8 =
Answer
![Page 6: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/6.jpg)
2.4and2.5.notebook
6
September 29, 2014
0
4 + -4 =
Answer
![Page 7: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/7.jpg)
2.4and2.5.notebook
7
September 29, 2014
Adding Integers-3 + -2 =
![Page 8: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/8.jpg)
2.4and2.5.notebook
8
September 29, 2014
-5 + 3
![Page 9: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/9.jpg)
2.4and2.5.notebook
9
September 29, 2014
Adding integers with the same sign
Adding integers with different signs
-2 + -7 = -5 + 9 =Add the two numbers and keep the same sign
Subtract the two numbers and keep the sign of the number with the larger absolute value
![Page 10: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/10.jpg)
2.4and2.5.notebook
10
September 29, 2014
Subtracting Integers, it is as easy as adding.... in fact you have to change it into an addition problem.
Hailey owed $200 on her credit card. She made another purchase of $20 how much does she now owe?
200 20
![Page 11: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/11.jpg)
2.4and2.5.notebook
11
September 29, 2014
Steps to solve:
1. Leave the first number alone.
2. Change the minus sign to a plus
3. Use the OPPOSITE of the second number
200 20
200 + 20
200 + (20)
SAME
CHANGE
OPPOSITE
200 20
![Page 12: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/12.jpg)
2.4and2.5.notebook
12
September 29, 2014
SAME CHANGE OPPOSITE
+++
+
121.2.
3.4.
1025
100
1590343737349015
Answer
![Page 13: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/13.jpg)
2.4and2.5.notebook
13
September 29, 2014
negative
positive
negative
positive
negative
positive
negative
positive
negative
positive
negative
positive
negative
positive
negative
positive
3 (4)
![Page 14: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/14.jpg)
2.4and2.5.notebook
14
September 29, 2014
10 2 3 4 5 6 7 8 9 1012345678910
To model on a number line:
You still start at 0.
Then you go to the first number.
5 (2)
Think of the minus sign as meaning do the opposite of the second number
![Page 15: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/15.jpg)
2.4and2.5.notebook
15
September 29, 2014
10 2 3 4 5 6 7 8 9 1012345678910
Model
8 ( 9)
![Page 16: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/16.jpg)
2.4and2.5.notebook
16
September 29, 2014
-5 - 3
![Page 17: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/17.jpg)
2.4and2.5.notebook
17
September 29, 2014
-3 - (-7) =
![Page 18: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/18.jpg)
2.4and2.5.notebook
18
September 29, 2014
Try these: Watch your signs!
1. 6 7
2. 7 15
3. 8 (3)
4. 10 (18)
![Page 19: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/19.jpg)
2.4and2.5.notebook
19
September 29, 2014
Homework
Worksheet on 2.4 and 2.5
![Page 20: Welcome! Please have your homework assignment on your desk ... … · 2.4and2.5.notebook 1 September 29, 2014 25: Subtracting Integers Welcome! Please have your homework assignment](https://reader034.vdocuments.us/reader034/viewer/2022042413/5f2cc962ca2fdf612006bb9c/html5/thumbnails/20.jpg)
2.4and2.5.notebook
20
September 29, 2014
2.4 and 2.5 answers
1. 12
2. 5
3. 11
4. 5
5. .2
6. 1
7. 4
8. 6
9. 1
10. 2
11. 8
12. 11
13. 5
14. 2
15. 7
16. 1
17. 1
18. 2
19. 4
20. 10