Idiot\'s Guides Basic Math and Pre-Algebra

Index 357

square roots (radical form), 232

squares, 185-186

standard deviation measurements,

284-286

standard form polynomials, 118

statistics

data set measurements

central tendency, 276-280

dividing, 281-283

spread measurements,

283-286

example problems, 293-295

straight angles, 156

subtraction

basic facts, 21-23

decimal fractions, 73-75

difference, 21

fractions, 64-66

like terms, 113-114

minuends, 21

signed numbers, 41-42

subtrahends, 21

subtrahends, 21

supplementary angles, 157

surface area, 214

cones, 224-225

cylinders, 223-224

prisms, 216 -218

pyramids, 220-221

spheres, 226

T

tangent circles, 199

tangents, 204

angle formation, 204-207

SOHCAHTOA memory

device, 241

trigonometric ratios, 241-244

tax calculations, 94-95

PEMDAS (Parentheses,

Exponents, Multiply, Divide,

Add, Subtract), 114

sine

SOHCAHTOA memory device,

241

trigonometric ratios, 241-244

slope, 141-142

formula, 141

graphing linear equations,

141-14 4

parallel lines, 162-163

perpendicular lines, 162-163

solids, measurements

cones, 224-225

cylinders, 222-224

prisms, 215-219

pyramids, 219-222

spheres, 225-226

surface area, 214

volume, 214

solution sets (inequalities), 132

solving equations

identity equations, 129-130

one-step, 123-124

simplif ication, 128-129

special cases, 129-130

two-step, 124-127

variables, 122

variables on both sides, 127-128

solving inequalities, 131

special case equations, 129-130

spheres, 225

surface area, 226

volume formulas, 226

spread measurements (data sets)

interquartile ranges, 284

ranges, 283

standard deviations, 284-286

square numbers, 49-50

scientific notation, 9-10
decimal fractions, 72-73
secants, 204
angle formation, 204-207
segments (lines), 153
bisectors, 158-159
chords, 200-203
diameters, 200-201
congruent, 156
midpoints, 158
semicircles, 198
sets of data, measurements
central tendency
means, 276-277
medians, 277-279
modes, 279-280
dividing
boxplots, 282-283
quartiles and percentiles,
281-282
spread measurements
interquartile ranges, 284
ranges, 283
standard deviation, 284-286
signed numbers
addition, 40-41
division, 43-44
multiplication, 42-43
subtraction, 41- 42
similar polygons, 234
similar triangles, 236 -237
finding missing measurements,
238
indirect measurements,
238-240
scale factors, 236
simple interest, 93
simplification
equations, 128-129
expressions, 110, 114 -116
fractions, 61