# Add and Subtract - Mr. Lakas Algebra 1 Page ```WHO AM I
5 minutes: fill out individually – NO TALKING
1) Find 1 person in your group you have at least 3
things in common with ___________
2) Find 1 person in your group that has impressed you.
______________________
HOW TO TAKE CORNELL
NOTES IN MATH
Page 3 in binder…put it away now
1) Name 5 things that could or should go in the left hand
column
2) Explain what goes in the right hand side
3) Explain what goes in the SCR section
9. Homework
Practice
Write in English:
2m + 3
Challenge
Write in English:
2(m + 3)
Visually
Negative numbers are black:
Positive numbers are red
A black and a red make Zero
Black + Black = ____________ Red + Red = ___________
Black + Red depends on __________________________
Number line
Positives go to the right :
Positive + Negative =Zero
Negatives go to the left
Positive + Positive = __________ Negative + Negative = ________
Positive # + Negative # depends on ________________________
Signs same , ADD or combine
Signs different – whichever has more wins
Examples:
1. -4 + 7
2. -4 + -8
3. 8 + -6
4.
5. -3 + -8
6. -5 + 5
2+9
Rules for subtraction – subtract means “add the opposite”
7 – 4 means 7 + the opposite of 4 or
7 + -4
5 - -6 means 5 + the opposite of -6 or
5+6
-4 - 2 means -4 + the opposite of 2 or
-4 + -2
How is a fast race horse like a dessert?
Integer Puzzle
ORDER OF
OPERATIONS
How to do a math problem with more than
one operation in the correct order.
Cornell notes: page 5
PEMDAS
• Remember the order
by the phrase
• Excuse
• My Dear
• Aunt Sally
The “P” and “E”
• The “P” stands for items in parenthesis
• Do all items in the parenthesis first
The “E” stands for Exponents
Do anything that has a exponent (power)
2
8
The “MD”
• Represents Multiply and Divide
• Do which ever one of these comes first in the problem
Work these two operations
from left to right
6/2 x 4 /3
The “AS”
• Do which ever one of these comes first
• Work left to right
6+3&times;4−1
4  (3  2)  2  4
3
2
16  3 (7  4)  24  3
2
1) 5 + (12 – 3)
3) 39 &divide; (9 + 4)
2) 8 – 3 • 2 + 7
4)
6)
10 + 8 &divide; 2 – 6
36 &divide; (1 + 2)2
5)
15 • 103
7) 3 • 104
8)
(5 – 1)3 &divide; 4
9)
14 + 3(7 -2) – 2 • 5
SCR
• Why does the order
of operation matter?
• Topic sentence
• Use math vocabulary
• Use complete
• Write the SCR
question in your
notes – it is part of
night.
sentences and good
grammar (NO IM)
• Correct solution
• Examples/Counterexamples
Order of Operation Bingo
with a partner on the marker boards
6. Homework
Practice
3  7  12  6  (7)
2
4+3∙9−3

Challenge
3  (7)  (12 )  6  (7)
3
3
5 + 3&divide;1
3
+8 −9
```