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Mod 8 Review Flashcards | StudBud
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Mod 8 Review
Mod 8 Review
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Answers
1
What is a numerical expression?
an expression including > < or =
an equality
numbers and symbols that represent an amount
a numerical sentence that tells you the value
2
Identify the coefficients in the expression.
-39
124x
124 and 39
124 and -39
3
Which expression is equivalent to 7 x (2+3) ?
7(2x3)
(7 x 2) x (7 x 3)
(7 x 2) + (7 x 3)
72 +73
4
Write product 2 x 2 x 2 x 2 x 2 using exponents.
26
25
32
25
5
Identify the coefficients in the expression.
7 and 14
14c
7
14
6
Exponents: Evaluate 4
3
64
48
16
12
7
Evaluate the expression: 3
2
× 3
5
37
310
910
97
8
Which expression is equivalent to:
4x + 12
?
x (4 + 12)
4(4x +12)
4( x + 3)
16x
9
Identify the constants: 5d + 7 - 2d - 3
7, 3
5, 7, 3, 2
5, 2
none
10
Evaluate the expression when y = 6; 5y + 1 =
31
16
Answer Not Shown
6
11
Evaluate the expression b
2
, when a = 5, b = 3, and c = 6
10
9
6
25
12
What is an equivalent expression?
An expression repeated over and over
Expressions that have different values
Expressions that have the same value
Expressions that have the same value and look the same
13
What is evaluate?
flips everything around
replaces each variable with a number
has nothing to do with math
replaces each variable with a letter
14
Evaluate the following expression below.
20
5
4
2
15
Evaluate the expression 6m + y if m = 5 and y = 7
35
37
47
72
16
Which expression is equivalent to 2(x + 7)?
2x + 9
2x + 14
9x
2x +7
17
Identify
constants
: 4
e
+ 7
e
+ 5
4, 7
4e, 7e,
5
4e, 7e, 5
18
Evaluate the expression. 2m ÷ n , let m = 8 and n = 4
3
1
4
7
19
Evaluate the expression p - 12 if p = 24
12
36
-12
24
20
Evaluate the expression: 5 + 9 ÷ 3 + 4
18
10
12
44
21
Which expressions are equivalent?
3x and x+2x
17x+3z and 20xz
4y+6 and 10y
11x−x and 11
22
What is a
like term
?
algebraic terms that have the same exponent
algebraic terms that have the same coefficient
none of the above
algebraic terms that have the same variable
23
What is a variable?
A letter that stands for an unknown letter
A number next to a letter
A fixed value.
A letter that stands for an unknown number
24
Identify the CONSTANT:
4
p³
9
4u
25
Exponents: Evaluate 2
5
25
64
32
10
26
5x+6y is equivalent to which expression?
11xy
10x-5x+6y+y
2x+2y+x+2x+4y
2(3x+4y)
27
Evaluate the expression xy + 4 if x = 3 and y = 12
40
48
19
28
Evaluate the expression below.
4
-4
4 or -4
29
What is the mathematical definition of base?
Tells you what to add`
Number that gets multiplied using exponent.
Tells you what to subtact
The instrument
30
What is an exponent?
The exponent is a number or variable.
It represents how many times the base is added together.
The exponent is a number with the base.
It represents how many times the base is multiplied together
31
What is a TERM?
The parts of an expression, separated by a + or - sign.
A word that is inserted in an expression.
The operations in an expression.
A letter that stands for a number.
32
Evaluate the expression
47 −
n
if
n
= 9
37
38
36
42
33
What is a constant?
a combination of numbers and variables
a fixed variable
a fixed number
everything but the signs
34
What is a coefficient?
The number next to a variable
mathematical statement with an equal sign
a mathematical statement
a letter that represents an unknown number
35
Which expression is equivalent to 4x+3x-2x?
5x
10x
7x-2
7x
36
Identify the coefficients in the expression.
45 and 12
0
45
12
37
The correct order of operations is: 1) parentheses, 2) exponents,
3) division, 4) subtraction, 5) multiplication, 6) addition
3) multiplication, 4) addition, 5) division, 6) subtraction
3) multiplication & division, 4) addition & subtraction
38
An
algebraic expression
is...
A math problem
The answer to a numerical expression
A division problem
A math sentence with a variable
39
Evaluate this expression. f + 10, let f = 7
17
10
7
3
40
Evaluate the expression n
2
÷ e
2
if n = 10 and e = 5
10
2
4
125
