Rounding
Order of Operations
Combining Like Terms
Math Vocabulary
Expressions/Equations
100
Round 12.56 to the nearest tenth
12.6
100
7 x (2+5)
49
100
5f + 3f
8f
100
variable
letter that takes the place of a number
100
Evaluate z(x + y); use x = 6, y = 8, and z = 6
84
200
Round 124.35467 to the nearest hundredth
123.35
200
7 - 24/8 x 4+6
1
200
7k+-6k
k
200
constant
just a number by itself
200
-3x-4
300
Round 12.223981 to the nearest thousandth
12.2334
300
14 - 8 + 3 + 8 × (24 ÷ 8)
33
300
n + 4 − 9 − 5n
-4n-5
300
like terms
terms that have the same variable and same exponent
constants can also be like terms!
300
2x(7x-2)
14x2-2x
400
Round 315.545 to the nearest whole number
316
400
(12 ÷ 3 ) + 3 + ( 16 - 7 ) × 4
43
400
10 − 5(9n − 9)
55 − 45n
400
Rational vs Irrational Numbers
Rational Numbers terminate OR repeat with a pattern
Irrational Numbers go on forever without a pattern
400
Determine f(3) where f(x) = x2+7x-3
27
500
Round 12.223981 to the nearest ten thousandth
12.2240
500
4 x (12 x 6 –42) + 9
233
500
x2-3x+4
no like terms to combine
500
standard form
listing the terms of a polynomial where the exponent is highest to lowest
500
A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C, after h hours of service.
C=50h+25