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Review

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**Review Order of Operations Using a calculator Algebra Graphing**

Conversions Metric System Weighted Average

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**Order of Operations Please Parenthesis Excuse Exponents**

My Multiplication Dear Division Aunt Addition Sally Subtraction

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

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**Calculator Example Type this into your calculator:**

5*10^2/1*10^3 = 5*10^2/(1*10^3) = 0.5

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**Calculator Example E function (EE) Computer language for (^10x)**

Don’t need parenthesis 5E2/1E3 = 0.5

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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

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**Graphing Always label axes Always have Title Take up most of page**

Appropriate scale Y-axis X-axis

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

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**Appropriate Scale All increments have to be EQUAL Y Y Y Y X X X X X X**

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**Appropriate Scale?? All increments have to be EQUAL Y Y Y Y X X X X X**

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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

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

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Metric System System of measurement based on factors of 10

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**Metric System Conversions**

Two ways Multiply by a conversion factor Use a table

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**Metric System Conversion**

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**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

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**1kg ??g 1. 103 102 101 100 10-1 10-2 10-3 kilo gram deci centi milli**

dg cg mg 1. Power of 10 Prefix Symbol Number

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**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

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**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

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**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

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**Weighted Average Average where all numbers are not equally weighted**

Must take into account weight of each number Example: Your Grade

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**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

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