Practice Workbook SE - East Penn School District

Name
LESSON 4.4
Use Variables
Vocabulary
Complete the sentence.
1. A is a letter which
stands for a number.
2. A number sentence stating that two amounts are equal
is an .
Write an expression. Choose a variable for the unknown.
3. Thomas had some money in his
bank account. He withdrew $10.
4. There were 16 cans on the
shelf. Some more cans were
placed on the shelf.
5. At the assembly, there are 83
students and some teachers.
6. There are 8 campers in the
pool. Some campers come out
to have a snack.
Write an equation for each. Choose a variable for the unknown.
7. There are 26 students in Mrs.
Philips’ class. Fifteen are boys.
The rest are girls.
8. Arturo has 4 posters. He buys
some more posters. Now he has
12 posters.
© Harcourt
9. Mr. Tran has 45 students in gym
class. Thirty-two are playing
volleyball. The rest are jogging.
10. Christine adds 4 coins to her
piggy bank. There are now
83 coins.
Mixed Review
Evaluate.
11. 3 (20 12) 12. (5 8) (2 7) 13. 25 (4 6)
Practice
PW19