1. Review

2. Review Order of Operations Using a calculator Algebra Graphing
Conversions
Metric System
Weighted Average

3. Order of Operations Please Parenthesis Excuse Exponents
My Multiplication
Dear Division
Aunt Addition
Sally Subtraction

4. Using a Calculator
Calculators only do what they are told, they are not psychic
Calculators are programmed to follow Order of Operations

5. Calculator Example Type this into your calculator:
5*10^2/1*10^3 =
5*10^2/(1*10^3) = 0.5

6. Calculator Example E function (EE) Computer language for (^10x)
Don’t need parenthesis
5E2/1E3 = 0.5

8. Algebra
Basic branch of math involved with solving equations with variables
Basic Rule: whatever you do to one side of an equation, do the same to the other side
X – 5 = 7
X =12

9. Graphing Always label axes Always have Title Take up most of page
Appropriate scale
Y-axis
X-axis

10. Any of these Correct?
Title
Title
Y-axis
Y-axis
X-axis
X-axis

11. Appropriate Scale All increments have to be EQUAL Y Y Y Y X X X X X X

12. Appropriate Scale?? All increments have to be EQUAL Y Y Y Y X X X X X

13. Conversions
Multiplying any quantity by 1 doesn’t change the original quantity
5 x 1 = 5
5 x 2/2 = 10/2 = 5
5kg x 1000g/1kg = 5000g

14. Conversion Factors
Quantity equal to 1 but relates two different measurements
1kg = 1000g
12in = 1ft

15. Metric System
System of measurement based on factors of 10

16. Metric System Conversions
Two ways
Multiply by a conversion factor
Use a table

17. Metric System Conversion

18. Metric System Table 103 102 101 100 10-1 10-2 10-3 kilo m, L, g deci
centi
milli k d c m
Power of 10
Prefix
Symbol
Number
Base Unit

19. 1kg  ??g 1. 103 102 101 100 10-1 10-2 10-3 kilo gram deci centi millidg cg mg 1.
Power of 10
Prefix
Symbol
Number

20. 1kg  1000g 1 0. 103 102 101 100 10-1 10-2 10-3 kilo gram deci centi
milli kg g dg cg mg 1 0.
Power of 10
Prefix
Symbol
Number

21. 10mL  ??L 1 0. 103 102 101 100 10-1 10-2 10-3 kilo Liter deci centi
milli kL L dL cL mL 1 0.
Power of 10
Prefix
Symbol
Number

22. 10mL  0.01L 0. 1 103 102 101 100 10-1 10-2 10-3 kilo Liter deci centi
milli kL L dL cL mL 0. 1
Power of 10
Prefix
Symbol
Number

24. Weighted Average Average where all numbers are not equally weighted
Must take into account weight of each number
Example: Your Grade

25. Example Grade = .3*100+.2*90+.5*85=90.5 HW(30%) 100
Labs(20%) 90 Test(50%) 85
Grade = .3*100+.2*90+.5*85=90.5