Unit Test — Unit test Answers

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Veronique found the difference of a number and 8.Which expression models the situation?

A
n minus 8
Option A
B
StartFraction 8 Over n EndFraction
Option B
C
StartFraction n Over 8 EndFraction
Option C
D
8 minus n
Option D
2
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Which are correct interpretations of the expression ? Check all that apply.

Question illustration
A
5 more than a number
B
the sum of a number and 5
C
the difference of a number and 5
D
5 less than a number
E
5 is greater than a number
F
the total of a number and 5
3

Joe told Mickey he got an hourly raise at work and his new rate will be $10.25 per hour. Mickey wants to know what Joe’s hourly rate was before his raise. If r represents the amount of the raise, which expression represents Joe’s hourly rate before his raise?

A
r minus 10.25
Option A
B
10.25 minus r
Option B
C
10.25 + r
Option C
D
r + 10.25
Option D
4

Fiona doubled the original amount in her savings account, s. Which expression represents her new balance and what is that new balance if ?

Question illustration
A
; when the new balance in Fiona’s savings account is $80.
Option A
B
; when the new balance in Fiona’s savings account is $320.
Option B
C
; when the new balance in Fiona’s savings account is $320.
Option C
D
; when the new balance in Fiona’s savings account is $80.
Option D
5

What is the exponential form of the expanded form below?

Question illustration
A
4 times 6
Option A
B
4 superscript 6
Option B
C
6 superscript 4
Option C
D
4 cubed
Option D
6

Which set of algebra tiles represents the sentence below?Jemel spent 6 fewer dollars.

A
6 boxes contain negative x and 1 box contains a plus sign.
Option A
B
1 box contains negative x and 6 boxes contain plus signs.
Option B
C
1 box contains x and 6 boxes contain minus signs.
Option C
D
6 boxes contain x and 1 box contains a minus sign.
Option D
7

What is written in expanded form?

Question illustration
A
9 + 9 + 9 + 9 + 9 + 9 + 9
Option A
B
9 times 9 times 9 times 9 times 9 times 9 times 9
Option B
C
7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7
Option C
D
7 times 7 times 7 times 7 times 7 times 7 times 7 times 7 times 7
Option D
8

What is the value of the expression ?

Question illustration
Answer not available
9

Which statements apply to the expression ? Check all that apply.

Question illustration
A
The base is .
Option A
B
The base is 3.
C
The exponent is 3.
D
The expanded form is .
Option D
E
The expanded form is .
Option E
F
(Three-fifths) cubed = StartFraction 9 Over 15 EndFraction
Option F
G
(Three-fifths) cubed = StartFraction 27 Over 125 EndFraction
Option G
10

Which property was applied to create this equivalent expression?

Question illustration
A
the commutative property only
B
the associative property only
C
the distributive property only
D
both the commutative property and the associative property
11

Mischa wrote, “Anderson has ten trading cards. He gives some to Desai. This describes a possible context for the expression .” Which explains the accuracy of what Mischa wrote?

Question illustration
A
It is inaccurate. Her words translate to .
Option A
B
It is inaccurate. Her words translate to .
Option B
C
It is inaccurate. Her words translate to .
Option C
D
It is accurate. Her words translate to .
Option D
12

Which expression can be used to model the phrase “the sum of three and a number”?

A
3 + x
Option A
B
x minus 3
Option B
C
3 minus x
Option C
D
x times 3
Option D
13

What is the exponential form of the expanded form below?

Question illustration
A
3 times 7
Option A
B
3 superscript 7
Option B
C
7 cubed
Option C
D
3 superscript 6
Option D
14

What is written in expanded form?

Question illustration
A
5 + 5 + 5 + 5 + 5 + 5
Option A
B
5 times 5 times 5 times 5 times 5 times 5
Option B
C
6 + 6 + 6 + 6 + 6
Option C
D
6 times 6 times 6 times 6 times 6
Option D
15

Swati is substituting and to determine if the two expressions are equivalent.Which statement is true?

Question illustration
A
Both expressions are equivalent to 264 when .
Option A
B
Both expressions are equivalent to 157 when .
Option B
C
Both expressions are equivalent to 46 when .
Option C
D
The expressions are not equivalent.
16

Which description matches the algebraic expression ?

Question illustration
A
the sum of a number and 45
B
the quotient of a number and 45
C
the product of a number and 45
D
the difference of a number and 45
17

Which statement could the expression represent?

Question illustration
A
one point greater than the last test grade
B
the difference of Gina’s score and one
C
the total cost less one dollar
D
one minute less than Mickey’s previous time
18

Which expression can be used to represent the phrase “Lamar decreased his collection of cards by seven”?

A
x minus 7
Option A
B
7 minus x
Option B
C
x + 7
Option C
D
7 x
Option D
19

Which expression is equivalent to ?

Question illustration
A
45 h
Option A
B
14 h
Option B
C
5 h + 9
Option C
D
5 h + 45
Option D
20

Which set of algebra tiles represents the sentence below?Carlton earned 3 more stamps.

A
1 box contains x and 3 boxes contain plus signs.
Option A
B
1 box contains x and 3 boxes contain minus signs.
Option B
C
3 boxes contain x and 1 box contains a plus sign.
Option C
D
3 boxes contain negative x and 1 box contains a plus sign.
Option D

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