day two calculator fundamentals algebra. calculator use it! scientific or graphing (no qwerty) does...
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Day TwoCalculator
FundamentalsAlgebra
Calculator
Use it!Scientific or Graphing (No Qwerty)Does Order of Operations CorrectlyClear buttonPaper first (plan-execute-check)
Basic Fundamentals
Positive and NegativeIntegersOdd and EvenDigitsFactors and MultiplesRemainders
Basic Fundamentals
Consecutive IntegersPrime NumbersSymbolsOperationsDistribution
Basic Fundamentals
Fractions = Division◦Add and subtract◦Multiplication◦Division◦Reducing◦Conversion: Mixed and improper◦Weirdness (Woe is Joe)
OJO! Mixed fractions will be marked wrong
Decimals◦Just a fraction◦Careful with the Calculator◦Comparing (left to right)◦Joe effect (place more important than value)
Ratios, Proportions, and Percents
x/y = the ration of x to y = or x:yRatio is part:partFraction is part:whole indirect variationPercentages are fractions
◦ = = x percentMemorize 1, 10, 20, 25, 50, 75 %Conversion 80% or 3/4
Averages
Make Average PieMedian and ModeProbability of x =
(number of outcomes x) total number of possible outcomesPermutations
Exponents and Square Roots◦Calculator◦Multiply◦Divide◦Raise a power to a power◦Joe effect (addition and subtract, parenthesis)◦Peculiar behavior (greater and less than one,
pos/neg)
◦* = ◦ =
◦Negative and fractional exponents
Algebra
Write it out◦14 is 5 more than some number.◦If one-fourth of a number is 3, what is one-half
of the same number?◦Is, of, times, product, what or unknown value,
more, sum, less, difference, ratio, quotient
Algebra: Basic Training
What ever you do to the left of the = you do to the right
“Is there a quick solution?”Inequality: when you multiply or divide by
a negative, switch the signSimplifying p191
FOILCombining like terms firstQuadratic SolutionsFactoring QuadraticsETS Favorites p195Absolute Value (Joe alert!)
Algebra: How to avoid it
PITA◦Numbers in the answer choices◦Specific: “what was the first payment◦You have the urge to write out algebra
PIYA◦Pick a number for the variable◦Use your number to solve◦Use your number in the answer choices◦Which ones? Small and nice (2,10,100)
Radicals and fractions – get rid of themFunctions – plug away
“If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.” ~John Louis von Neumann
Work for next time –Finish the multiple choice pp. 305-313
Algebra Main Points
Find the trick, do not directly solve for x or y unless you have to.
Try factoring or expanding expressions to find an answer
Simultaneous equations, you should add or subtract the equations
When the question has number answers, PITA – plug in the numbers to find the answers.
If the answers have variables, plug your numbers.
Algebra Main Points
Use “easy” numbers PIYAWith inequalities, try more than one numberSAT Function problems are simply “Simon
Says” follow the pattern for the funny symbol
Domain is what goes into a function, and range is what comes out. No zeros.
Translate word problems into equations and solve.
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