Transcript Let`s Get Started! - Algebra1GeomEssentials

Order of Operations
Section 1.3
1
(Please write this down)
• Simplify problems in this Order:
• P: parentheses ( )
• E: exponents
Base exponent
• M/D: multiplication and division
from left to right
• A/S: addition and subtraction
from left to right
Example of Left/Right Issue
The first step:
DIVIDE the 6 by 2.
Then you MULTIPLY
the answer by 3.
Letters + Math = Algebra
• A letter used in Math is called a “variable.”
(More on this soon)
• Replace the letter with a given number:
What is x + y if x = 2 and y = 3?
2+3 =5
Replace the letters with numbers,
and solve. if a = 2 and b = 7
Example:
3
4(2) -
(7 - 3)
4(8) - (4)
32 - 4
28
Fractions and PEMDAS
3  12
72
(3  12)
(7  2)
Do the top and bottom of
the fraction separately.
Imagine parentheses
around the top and
bottom.
(15)
3
(5)
6
Homework:
Practice 1-3 Worksheet,
MIXED EXERCISES (p24)
#2-40 (evens)
• Due next class period (Monday)
• Put your work on a separate
paper, but write your answers on
the worksheet.
• Extra help is available before
and after school.