Math Word Problems Demystified - A Self Teaching Guide

frequency distribution, 271

fulcrum, 172

goal, 2

grouping symbols, 69

guess and test, 258–259

headwind, 140

How To Solve It,1

implementation, 2

improper fractions, 19

improper fractions to mixed

numbers, 19

interest, 160

lever problems, 172–180

lowest common denominator

(LCD), 19

make an organized list, 256–257

measures of average, 276–279

mean, 276

median, 277

mode, 278

measures of variation, 279–281

range, 279

standard deviation, 280–281

mixed numbers, 19, 21–23

addition, 21

division, 23

multiplication, 22–23

subtraction, 21–22

mixed numbers to improper

fractions, 19

mixture problems, 147–159

multiplication, 8

number problems, 88–97

numerator, 18

operations, 6, 69

part, 38–39

percent, 35–50

decimal to percent, 36

fraction to percent, 36–37

percent to decimal, 35

percent to fraction, 36

word problems, 43–50

percent decrease, 47–48

percent increase, 47–48

percent problems, 37–40

perimeter of a rectangle, 63, 242

Polya, 1

principal, 160

probability experiment, 267

event, 268

outcome, 267

sample space, 268

proportion, 52

quadratic equations, 226–231

rate, 38–39, 60, 131, 160

ratio, 51

reducing fractions, 18

return, 160

reversing digits, 98

second degree equation, 226

solution, 69

solve a simpler problem, 262–263

solving an equation, 69–81

solving problems in geometry,

240–251

solving problems using proportions,

51–59

solving problems using quadratic

equations, 232–239

solving problems using two equations,

207–225

standard deviation, 280–281

strategy, 2

statistics

average, 276

mean, 276

median, 277

mode, 278

range, 279

spread, 279

standard deviation, 280–281

300 INDEX