Post on 16-Jan-2016
Bell Work 8/22/14Pick 4 expressions and evaluate those expressions.
1. 8 5
4. 7 13
7. 8 9
2. 15 4
5. 12 8
8. 20 12
3. 14 9
6. 18 25
9. 13 35
58
415
914
713
812
2518
98
1220
1335
Yesterday’s Homework
1. Any questions?2. Please pass your homework to the front.
• Make sure the correct heading is on your paper.• Is your NAME on your paper?
• Make sure the homework is 100% complete.• Incomplete work will NOT be accepted.
What Do Notes Look Like?• Heading• Date
• Section # and Title
• Notes• You do not have to copy the text in blue!
•Homework
Adding and Subtracting Real Numbers (subtract)
TSWBAT: subtract real numbers.
04/21/23
Heading
Students understand and use such operations as taking the opposite, finding the reciprocal, taking a root, and raising to a fractional power. They understand and use the rules of exponents.
1.2B
Notes• Rules for Subtraction
- To subtract b from a, add the opposite of b to a.
( )a b a b - Leave, change, change.
• When subtracting two numbers, leave the first number, change the subtraction sign to addition, and change the second number to its opposite.
a bLeave!
Change!
Change!
a b
Notes
Leave!
Change!
Change!
Ex.
12 412 48
Evaluate the expression.
Now you try.
Leave!
Change!
Change!
Ex.
8 138 13
5
Leave!
Change!
Change!
Ex.
6 4 6 4
2
412
8
46
2813
5
Leave!
Change!
Change!
Ex.
10 3 10 3
13 310
13
Notes
Now you try.
Ex.9 29 27
Ex.4 104 106
Ex.6 8 6 814
Ex.7 207 20
13
Ex. 12 29
12 2917
Ex.
5 31 5 3136
Evaluate the expression.
29
7410
686
14
720
131229
17
315
36
Notes
Now you try.
Ex.7 2 3 7 2
8
Evaluate the expression.
27
53
5 3
35
8
Ex.3 9 2 3 9
8
39
6
6 2
26
8 2
Ex.3 1 9 3 1
5
13
49
4 9
49
5
Ex.8 4 7 8 4
3
48
4
4 7
47
3 7
Notes
3
7
Ex.
6 9
7 7
Now you try.
Evaluate the expression.
69
3
3.2
Ex.4.3 7.5 4.3
7.5
3.26
7
9
7
7
3
Ex.2 5
3 3
52
72
3
5
3
4.3 7.5
4.5
Ex.5.7 1.2 1.2
5.7
4.55.7 1.2
Summary
Subtracting real numbers is just another way of adding. All you have to do is “Leave, _______, Change.” This will make the subtraction problem an ________ problem. Now just follow the rules of addition.
Change
addition
Today’s Homework
1. Pencil ONLY.2. Must attempt EVERY problem.3. Always check your answers.
Rules for Homework
Class WorkEvaluate the expression.
1. 2 10 2. 23 11 3. 24 46
4. 6 3
7. 9 12
10. 4 14
13. 21 30
5. 10 4
8. 1 12
11. 13 2
14. 25 11
6. 16 11
9. 8 22
15. 41 17
12. 13 31
16. 7 2 5 7 4
17.2 2
18. 3.4 2.5
Complete the Ticket Out the Door without talking!!!!!
Talking = time after the bell!
Ticket Out the Door
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Evaluate the expression.
10 17