Download Concepts 1.1

Bell Work
8/22/14
Pick 4 expressions and evaluate those expressions.
1.
85
4.
 7  13
7.
8 2.
5
13
7
 8   9 
8
9
5.
8.
15   4 
12   8 
15
4
12
8
20   12 
3.
 14  9
6.
 18   25 
18
 25
9.
20
 12
14
9
13   35 
35
 13
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
Heading
5/24/2017
1.2B Adding and Subtracting
Real Numbers (subtract)
TSWBAT: subtract real numbers.
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.
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.
Leave!
Change!
Change!
a b
 a   b 
Notes
Evaluate the expression.
Ex.
Leave!
12  4
Change!

4
 12   
12 Change!
8
4
8
Now you try.
Ex.
8 13
 8   13
13
 5
8
5
Leave!
Change!
Change!
Ex.
Leave!
10   3
Change!

 10 3
Change!
10
 13
3
13
Ex.
Leave!
6   4
Change!
4
 6 
6 Change!
 2
4
2
Notes
Evaluate the expression.
Ex.
Ex.
92
 9   2
7
9
2
7
4 10
 4   10
 6
Ex.
10
4
6
6  8
 6   8
 14
6
8
14
Now you try.
Ex.
20
7  20
7
 7   20
13
 13
Ex.
12   29 29
 12
 12  29
17
 17
Ex.
5
5  31
 31
 5   31
36
 36
Notes
Evaluate the expression.
Ex.
7
5
723
 2 3

3
 7   2
5
8
 53
8
Ex.
9 6
39  2
3  2

2
 3   9   
6 8
 6   2
 8
Now you try.
Ex.
3 1  9
 3   1  9
 4  9
5
Ex.
3
9
1  4
4
5
8 7
847
4 4
 8   4   7 
4 3
 4   7 
 3
Notes
Evaluate the expression.
9
Ex.
6
6 9

3
7 7
6  9
      3
7  7
7
Ex.
4.3  7.5
 4.3   7.5
7.5
 4.3
3.2
 3.2
Now you try.
2
5
2 5
 
7
3 3
2  5
7
      
3  3
3
Ex.
Ex.
5.7 1.2
 5.7   1.2
 4.5
5.7
1.2
4.5
Summary
Subtracting real numbers is just another way of
Change
adding. All you have to do is “Leave, _______,
Change.” This will make the subtraction problem an
addition problem. Now just follow the rules of
________
addition.
Today’s Homework
Rules for Homework
1. Pencil ONLY.
2. Must attempt EVERY problem.
3. Always check your answers.
Class Work
Evaluate the expression.
1.
2  10
2.
23  11
3.
24  46
4.
 6   3
5.
 10   4 
6.
16   11
7.
 9  12
8.
1   12
9.
8   22
10.
 4  14
11.
13   2
12.
 13  31
13.
 21  30
14.
 25   11
15.
 41  17
17.
7 4
 
2 2
18.
3.4   2.5
16.
725
Ticket Out the Door
Complete the Ticket Out the Door without talking!!!!!
Talking = time after the bell!
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Evaluate the expression.
10 17