Transcript Concepts 1.1

Bell Work
8/21/14
Write the phrase as a variable expression.
1. x plus 6
2. 3 times p
3. The quotient of 9 and m
x
6
3
9
p
Give two ways to write each algebraic expression in words.
4.
x 1
5.
12r
m
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
4/13/2016
1.2A Adding and Subtracting
Real Numbers (add)
TSWBAT: add 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
• Number Line Addition
1. Start on the number line with the initial number.
2. Move from there according to the second number.
• If adding a positive, move to the right.
Ex.
• If adding a negative, move to the left.
Ex.
Ex.
2  ( 5)
 3
 2   3
 5  4
 5
 1
Move 5 spots to the left.
-3
2
Starting Point is 2.
Notes
• Rules of Addition
• Same Sign Numbers
47
 35
82
1. Add the numbers.
2. Keep the same sign.
Ex.
5 7
 12
5 Ex.
9  (6)
7
 15
12
9
6
15
Ex.
47  (35)
 82
Now you try.
Ex.
3
4
7
Ex.
3  (4)
 7
Ex.
12  (32) 12
 32
 44
44
29  56
 85
29
 56
85
Notes
• Different Sign Numbers
1. “Larger” number minus the
“smaller” minus.
2. Keep the sign of the “larger” number.
Ex.
9  (15)
1. “larger” minus “smaller”
15  9
6
2. Keep the sign of “larger” number
 6
You can do
this step in
your head.
What’s “larger”
9 or 15?
Negative wins!
Notes
Evaluate the expression.
Ex.
18  ( 4)
 14
18
4
14
Ex.
8  3
 5
8
3
5
Ex.
21  35
 14
35
 21
14
Now you try.
Ex.
14  (19)
 5
Ex.
19
14
5
6  10
4
Ex.
10
6
4
43 18
 25
43
 18
25
Notes
Evaluate the expression.
Ex.
7   2   4
 5 4
5
7
2 4
5
9
9
Ex.
3   1  7
 4  7
7
3
1  4
3
4
3
Now you try.
Ex.
5   3   6 
 2   6
 4
6
5
3  2
2
4
9
4
4   5   7   5  7
9 16
 9   7 
Ex.
 16
Notes
Evaluate the expression.
6
Ex.
2  6
 
5  5
4

5
2
4
Ex.
4
1
5
Ex.
3.2   1.5
 4.7
3.2
 1.5
4.7
Now you try.
Ex.
 4  1
  
 3  3
5

3
7.8  2.5
 5.3
7.8
 2.5
5.3
Summary
When adding, if the signs are the same, add and
same sign. If the signs are different,
keep the ______
subtract and keep the “larger” sign. With fractions, if
________
the bottoms are the same simplify the tops. With
decimals and add like
decimals, just line up the ________
normal.
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.
69
2.
13  15
3.
43  38
4.
 5   2
5.
 7   8
6.
 15   26
7.
 6  3
8.
4   11
9.
9   31
10.
 9  11
11.
18   9
12.
 12  27
13.
 23  35
14.
 24   41
15.
 55 18
17.
2 7
 
3 3
18.
7.3   2.1
16.
3 7 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.
 19  6