1-2 Practice C.pdf - MrWalkerHomework

Name Date Class
LESSON
1-2
Practice C
Writing Algebraic Expressions
Write an expression for each word phrase.
1. a number p increased by 20
2. 11 less than a number n
3. the quotient of 36 and a number m
4. 8 less than a number k divided by 9
5. 9 times the sum of a number d and 13
6. the sum of 25 times a number w and 10
7. twice the quotient of a number b
and 24
8. 6 times the difference of a number z
and 19
Translate each algebraic expression into words.
9. y 7
10. 12p
11. 3 5n
12. 10(8 w)
Write an algebraic expression and use it to evaluate each word
problem.
13. At a concession stand, hot dogs are $1.50, hamburgers are $3,
and soft drinks are $2. Write an expression for the total cost of
buying h hot dogs, b hamburgers, and s soft drinks. Find the
total cost of 3 hot dogs, 2 hamburgers, and 4 soft drinks.
14. At the Music Gallery all the CDs are on sale for 15% off the
regular price p.Nathan bought 3 CDs that were all the same
regular price. Write an expression that represents what Nathan
paid before taxes. If the regular price of each CD Nathan bought
was $13.50, what was the total cost before taxes
Copyright © by Holt, Rinehart and Winston.
20 Holt Middle School Math
All rights reserved.

LESSON
1-2
Practice B
Writing Algebraic Expressions
Write an expression for each word phrase.
1. a number n divided by 5
n 5
3. a number c decreased by 11
c 11
5. 6 less than a number x
x 6
7. 3 times the sum of a number b and 5
3(b 5)
9. the sum of 11 times a number s and 3
11s 3
11. a. Madeline worked x hours at a rate of $7 per hour. Write an
expression to find out how much money Madeline earned.
b. How much money would Madeline have earned if she worked 18 hours
12. a. Jonah wants to divide his baseball card collection of c cards
equally among 6 friends. Write an expression to determine the
number of cards he will give each friend.
b. If Jonah has 144 cards, how many will he give each friend
Write an algebraic expression and use it to solve each
word problem.
13. Mike bought 45 stamps at the post office. After he used
x stamps, he had x less than 45 stamps remaining. How
many stamps did he have left after using 33 stamps
45 x ; 12 stamps
14. At the deli Jackie bought y pounds of ham salad for $4.19
per pound. If she buys 3 pounds, how much will it cost
4.19y ; $12.57
2. the sum of 4 and a number y
4 y
4. the product of a number n and 9
6
c
$126
24 cards
Copyright © by Holt, Rinehart and Winston.
19 Holt Middle School Math
All rights reserved.
9n
6. the quotient of 21 and a number b
2 1
b
8. 10 times the difference of a number
d and 3
10(d 3)
10. 7 minus the product of 2 and a
number x
7 2x
7x
LESSON
1-2
Practice C
Writing Algebraic Expressions
Write an expression for each word phrase.
1. a number p increased by 20
p 20
3. the quotient of 36 and a number m
3 6
m
5. 9 times the sum of a number d and 13
9(d 13)
7. twice the quotient of a number b
and 24
2 2
b4
Translate each algebraic expression into words.
9. y 7
a number y decreased by 7
11. 3 5n
3 plus the product of 5 and
a number n
2. 11 less than a number n
n 11
4. 8 less than a number k divided by 9
k k 8
8 or
9 9
6. the sum of 25 times a number w and 10
25w 10
8. 6 times the difference of a number z
and 19
6(z 19)
Write an algebraic expression and use it to evaluate each word
problem.
13. At a concession stand, hot dogs are $1.50, hamburgers are $3,
and soft drinks are $2. Write an expression for the total cost of
buying h hot dogs, b hamburgers, and s soft drinks. Find the
total cost of 3 hot dogs, 2 hamburgers, and 4 soft drinks.
1.5h 3b 2s; $18.50
14. At the Music Gallery all the CDs are on sale for 15% off the
regular price p.Nathan bought 3 CDs that were all the same
regular price. Write an expression that represents what Nathan
paid before taxes. If the regular price of each CD Nathan bought
was $13.50, what was the total cost before taxes
3(p 0.15p); $34.43
10. 12p
the product of 12 and a number p
12. 10(8 w)
10 times the sum of 8 and a
number w
Copyright © by Holt, Rinehart and Winston.
20 Holt Middle School Math
All rights reserved.
LESSON
1-2
Reteach
Writing Algebraic Expressions
What words tell you to add, subtract, multiply, or divide
Add n 6
n plus 6
the sum of n and 6
6 added to n
n increased by 6
Give the algebraic expression that represents the word
expression.
1. the quotient of n and 3
n 3
3. the factors 3 and n
3n
5. 3 less than n
n 3
7. n increased by 3
n 3
Subtract n 6
n minus 6
the difference
between n and 6
6 subtracted from n
6 less than n
n decreased by 6
Multiply 6n
n times 6
the product of
n and 6
6 multiplied by n
2. 3 more than n
n 3
4. n decreased by 3
n 3
6. the product of n and 3
9. Michelle had $142 in her savings account. Write an expression
to determine the number of dollars left in her account after she
withdrew d dollars.
10. The Mortons are donating $1000 to buy gifts for the children
spending Thanksgiving in a hospital ward. Write an expression
to determine the amount to be spent on each of c children if
they are to share equally in the donated money.
142 d
1000 c
11. The circumference of the earth is about 25,000 miles. Write an
expression to determine the number of miles traveled after an
airplane pilot travels x times around the earth. 25,000x
3n
8. one-third times n
1 n or n 3
3
Divide n 6
n divided by 6
the quotient of
n and 6
6 equal shares of n
LESSON
1-2
Challenge
Amazing Math
Write an algebraic expression for each word phrase on the
board. Evaluate each expression for x 2.
Then find a path from the top row to the bottom row that
gives a total of 22.
3 times x
3x 6
1 more
than x
x 1 3
1 less than
3 times x
3x 1 5
twice x
2x 4
x increased
by 2
x 2 4
22
1 less than
twice x
2x 1 3
the product of
3 and x
3x 6
the difference
between 3
and x
3 x 1
the difference
between x
and 1
x 1 1
the quotient of
x and 2
2
x 1
6 more than x
x 6 8
x decreased
by 1
x 1 1
the difference
between 2
and x
2 x 0
the sum of
x and 5
x 5 7
7 increased
by x
7 x 9
x increased
by 3
x 3 5
half of x
2
x 1
the product of
4 and x
4x 8
1 more than
half of x
2
x 1 2
the quotient of
6 and x
6 x 3
the quotient of
twice x and 2
2 x
2
2
twice x
increased
by 3
2x 3 7
the sum of 6
and twice x
6 2x 10
the product
of 4 and 3
times x
4(3x) 24
5 times x
divided by 2
5 x
5
2
Copyright © by Holt, Rinehart and Winston.
21 Holt Middle School Math
All rights reserved.
Copyright © by Holt, Rinehart and Winston.
22 Holt Middle School Math
All rights reserved.
Copyright © by Holt, Rinehart and Winston.
109 Holt Middle School Math
All rights reserved.