Index 453Subtraction
decimals
estimate differences, 78–79, PB 89–90
like/unlike signs, 80–81, PB 91–92
Subtraction Principle, 80–81
estimate differences
front-end estimation, 79, 409(SU), PB 89–90
rounding, 78–79, PB 89–90
fractions, 118–19, 414(SU), PB 133–34
integers
additive inverse, 8–9, PB 7–8
with like/unlike signs, 8–9, PB 7–8
model (with tiles and number lines), 8–9
rename absolute-value expressions, 8–9, PB 7–8
mixed numbers, 120–21, PB 135–36
whole numbers and decimals, 409(SU)
Subtraction Principle, 80–81
Subtraction Property of Equality, 36–37, 45, 46–47, PB 39–40
Supplementary angles, 244–45, PB 275–76
Surface area
complex figures, 320–21, PB 359–60
cylinders and cones, 310–11, PB 349–50
effect of changing dimensions, 322–23, PB 361–62
estimate, 312–13, PB 351–52
prisms, 306–7, PB 345–46
pyramids, 308–9, PB 347–48
Surveys, 208–9, PB 235–36
Symbols (see alsoSymbols, Table of)
approximately equal to (), 37, 78, 411(SU)
congruent to (), 160
empty set, 56
fraction/division bar, 133
inequality symbols
is greater than (), 54
is greater than or equal to ( ), 54
is less than (), 54
is less than or equal to ( ), 54
is not equal to (), 34, 54
percent (%), 174
radical sign, 276
similar to (~), 160
Symbols, Table of, 438
Symmetry
line/line of, 290–91, PB 325–26
point, 291, PB 325–26
rotational, 290–91, PB 325–26
Tables
Formula Chart, 440
Measurement Conversions, 439
Symbols and Percent Table, 438
Tables, using
compound interest, 200–1, PB 223–24
graphing calculator, 363, 367
invented operations, 68, PB 75
sales tax, 193, PB 216
spreadsheet software, 198, 213, 236–37, 294–95
Technology
calculator
check solutions, 67, 80, 103, 132
find permutations/combinations, 345
find square roots, 277
graph linear functions, 363, PB 409–10
graph quadratic functions, 366–67
multiply/divide numbers in scientific notation, 91–93
computer spreadsheet
calculate measurements for scale drawings, 159
calculate perimeter and area of rectangles, 294–95, PB 329–30
compute simple interest, 199
organize and analyze financial data, 236–37, PB 263–64
organize data, 213
geometry software (explore congruent triangles), 257
Tell About It, PB 30, 32, 58, 60, 80, 82, 120, 122, 164, 166, 194, 196,
232, 234, 268, 270, 304, 306, 338, 340, 370, 372, 396, 398, 430, 432,
460, 462
Terminating decimals, 72–73, PB 83–84
Tessellations,292–93, PB 325–26
Test Prep (lessons), 27–28, 52, 69–70, 105–6, 145–46, 171–72, 205–6,
238, 270, 300, 328, 349–50, 380, 406
Test Preparation, PB 4, 16, 34, 46, 106, 152, 159, 168, 212, 254, 278,
296, 318, 324, 348, 360, 388, 402, 438
Theoretical probability, 334–35, PB 377–78
Three-dimensional figures (see alsoGeometry, three-dimensional
figures)
attributes, 302–3, PB 341–42
classify, 302–3, PB 341–42
draw, 304–5, PB 343–44
nets, 306–7, PB 345–46
Transformations
combining, 378–79, PB 425–26
dilations, 374–75, PB 421–22
reflections, 370–71, PB 417–18
rotations, 372–73, PB 419–20
translations, 370–71, PB 417–18
Transversals (see alsoGeometry, lines, parallel), 246–47, PB 277–78
Trapezoid (see alsoGeometry, plane figures, polygon, quadrilaterals),
260–61, PB 291–92
Tree diagrams, 330–31, 332, 340–41, 342–43, 349, PB 373–74, 384,
385–86, 392
Triangles
classified by lengths of sides
equilateral, 254–55, PB 285–86
isosceles, 254–55, PB 285–86
scalene, 254–55, PB 285–86
classified by lengths of sides and measures of angles
acute scalene, 254–55, PB 285–86
obtuse isosceles, 254–55, PB 285–86
right scalene, 254–55, PB 285–86
classified by measure of angles
acute, 254–55, PB 285–86
obtuse, 254–55, PB 285–86
right, 254–55, PB 285–86
congruent (SSS, SAS, ASA), 256–57, PB 287–88
congruent sides/symbol (tick marks), 254
constructions, 258–59, PB 289–90
find missing side and angle measures, 256–57, PB 288
Triangle Inequality Theorem, 255
use geometry software to explore congruent triangles, 256–57
Triangular numbers, 354–55
Trinomials, 382–83, PB 433–34
Two-step equations, 44–45, PB 47–48Unit (dimensional) analysis, 166–67, PB 185–86
Unit rate/unit cost, 150–51, PB 169–70