Download Algebraic Expressions

Fill in the blank with the correct math term, and give an example of each.
A. A(n) _______________ is a mathematical relationship that uses one or more variables,
numbers, or operation symbols.
Example:
B. A(n) _____________ is a symbol that can be replaced by a number in a mathematical
expression or equation.
Example:
C. A(n) _____________ is a mathematical sentence with an equal sign.
Example:
Write the name of Terry’s friends next to the expression that matches his or her age.
Let t represent Terry’s age.
D. t
____________
E. 2 x t
____________
F. t – 3
____________
G. t + 3
____________
H. 10 x t
____________
I. 3 x t
____________
J. t ÷ 2
____________
K. t – 10
____________
© 2002 CompassLearning, Inc.
Clues
Luke is 3 years older than Terry.
Alice is twice as old as Terry.
Tim is 10 years younger than Terry.
Mario is half as old as Terry.
Kim is 3 years younger than Terry.
Donna is 3 times as old as Terry.
Luis is 10 times older than Terry.
Molly is the same age as Terry.
Activity 40919
Write what the variable n represents in each expression.
L. Lisa can run the 100-yard dash 5 seconds faster than Jerry. Lisa’s time is n – 5
seconds.
M. Pedro is 3 times younger than his father. Pedro is n ÷ 3 years old.
N. Lucia has $10.00 less than her sister. Lucia has n – 10 dollars.
O. Jack is 2 times taller than his younger brother. Jack is 2 × n inches tall.
Write an expression for each problem.
P. Fred saves the money he earns. Today, his father gave him $20.00 for cutting the
grass. Write an expression that shows the amount of money Fred has earned
altogether.
Q. Candy at the corner store costs 2 times more than candy at the grocery store. Write an
expression that shows how much candy costs at the corner store.
R. Mary bakes 10 fewer cupcakes than cookies for the bake sale. Write an expression that
shows how many cupcakes Mary baked.
© 2002 CompassLearning, Inc.
Activity 40919
Today I learned:
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Crossword Puzzle
Use the clues to complete the puzzle. The bolded letters should be used as variables.
Across
1
3
5
7
9
10
12
14
20 times slower than Sam
5 times more than Rick
Tim’s age plus 12 years
3 plus the number of friends
5x5
4 plus Nancy’s age
pizza slices divided by 8 students
an expression that equals 5
1
2
5
0
x
2
Down
1
2
3
4
6
8
11
12
13
twice as much money as Ted
2 years older than Sam
Rick’s time less 13 seconds
50 divided by a number
10 + 5
an expression that equals 7
a number less 3
number of pizza times 6
8 less the number of girls
3
S
4
5
6
7
8
9
10
11
÷
14
© 2002 CompassLearning, Inc.
12
13
÷
Activity 40919
© 2002 CompassLearning, Inc.
Activity 40919