Expressions and Variables
Evaluate the expression when x = 6
15 - x
9
Write the product using an exponent
10 x 10 x 10
103
Evaluate the expression
8(7+3)
80
Order the integers from greatest to least
-8, 5, -4, 2, 0, 6
6, 5, 2, 0, -4, -8
Which quadrant is the ordered pair (-3, 2) in?
Quadrant II
Evaluate the expression when a = 4 and b = 7
ab
28
Write the power in words and as repeated multiplication. Then evaluate the power.
25
Two to the fifth power
2 x 2 x 2 x 2 x 2
32
Evaluate the expression (70-10)/2
30
State the opposite number and the absolute value
5
opposite: -5
absolute value: 5
Describe the way in which you would plot the point (-4, -5)
From the origin, go to the left 4 and then go down 5.
Write a variable expression to represent the phrase
The quotient of a number and 3
n / 3
Write a variable expression for the area of a square with a side x
x2
Evaluate the expression when x = 4 and y = 5
4(x + y)
36
Evaluate the expression when x = -4
|50| - |x|
46
Using a scratch sheet of paper, plot the point (5, -6)
Answer written on board
Evaluate the expression when a = 2, b = 15, and c = 3
bc + a
47
Evaluate the expression when n = 7
n3
147
Evaluate the expression when x = 4 and y = 2
x2 - y
14
Evaluate the expression when x = -8
-x - 3
5
Does Quadrant II have a negative x coordinate, or a positive x coordinate?
negative
Write a variable expression for the number of inches in x feet
12x
Write the product using an exponent
s x s x s x s x s
s5
Evaluate the expression
5 [36 - (13 + 9)]
70
Evaluate the expression when r = -5 and s = 3
( |r| + 1)2 - s
(5 + 1)2 -3
(6)2 - 3
36 - 3
=33
In a coordinate plane, point P is 8 units to the left of the origin and 6 units up. What are the coordinates of point P?
(-8, 6)