AnswersPre-Algebra - MA3119 A Distance LearningWriting and Evaluating Expressions

Writing and Evaluating Expressions Answers

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Write and evaluate the following algebraic expression when . the product of 24 and a numberWhich is the correct expression and product?

Question illustration
A
; when , the value is 115.2.
Option A
B
; when , the value is 5.
Option B
C
; when , the value is 115.2.
Option C
D
; when , the value is 5.
Option D
2
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A large amount of peanuts was divided equally into 6 small bags. The total number of peanuts, p, was 342. Which statements can be used to write an expression and then find the number of peanuts that ended up in each bag? Check all that apply.

A
The operation is division.
B
The operation is multiplication.
C
The variable is the number of bags.
D
342 divided by 6 equals 57.
E
Write the division expression as a fraction, .
Option E
F
To evaluate, substitute 342 for the variable.
G
Each bag will have 57 peanuts.
H
The constant is 342.
3

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
4

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
5

Henry divided his socks into five equal groups. Let s represent the total number of socks. Which expression and solution represent the number of socks in each group if ?

Question illustration
A
; when , the number of socks in each group is 4.
Option A
B
; when , the number of socks in each group is 15.
Option B
C
; when , the number of socks in each group is 4.
Option C
D
; when , the number of socks in each group is 15.
Option D
7

Which algebraic expression represents “the quotient of 7 and a number”?

A
StartFraction 7 Over n EndFraction
Option A
B
7 + n
Option B
C
7 n
Option C
D
7 minus n
Option D
8

Which algebraic expression represents “the sum of a number and 9”?

A
n minus 9
Option A
B
n + 9
Option B
C
9 n
Option C
D
StartFraction n Over 9 EndFraction
Option D
10

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

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