Day ThreeAlgebra Grid Ins

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, DON’T◦Steps:

Start with C Work out the steps of the problem Look for something in the problem that tells you

what must happen to be correct When correct, STOP

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.

Grid-Ins

Instructions (fill in boxes, ovals, start left)Enter what fits, no need to round or reduceNo mixed numbersLess confusing questions, no tricksOrder of difficulty