Variables
Algebraic Expressions
Algebraic Equations
Subtraction
Random
100

What is an example of a variable?

any lowercase letter: a, g, k, m, n

100
Write the algebraic expression: The sum of fifteen and a number
15 + n or n + 15
100
Write the algebraic equation: Five times a number is eighty.
5x = 80
100
Write the algebraic expression: Ten minus a number is three
10 - n = 3
100
What operation should you use with the key word: "Decreased by"
Subtraction
200
What is variable in this expression? x + 10 = 35
x
200
Write the algebraic expression: The product of eight and a number
8x
200
Write the algebraic equation: Twenty-one more than a number is thirty
n + 21 = 30 or 21 + n = 30
200
Write the algebraic expression: The difference between a number and 5
n - 5
200

Is there a difference between the variable n and x?

No.

300

How would you represent "the number" in an algebraic equation? 

Use a variable

300
Write the algebraic expression: The quotient of forty five and a number
45 / n
300
Write the algebraic equation: Forty divided by a number is ten.
40 / n = 10
300
Write the algebraic equation: Three hundred decreased by a number is two hundred
300 - n = 200
300
What key word tells you to use the equal sign?
Is
400
What are the variables in this equation? a + b = 12
a and b
400
Write the algebraic expression: Ten increased by a number
10 + n or n + 10
400
Write the algebraic equation: Eighteen decreased by a number is two
8 - n = 2
400
Write the algebraic equation: Ninety less than a number is ten
n - 90 = 10
400
Write the algebraic equation: Fifty split by a number is two
50 / n = 2
500
What is the definition of a variable?
A letter that represents a number
500
Write the algebraic expression: Double a number
2x
500
Write the algebraic equation: Twice a number is fifty
2x = 50
500
Write the algebraic equation: Sixty decreased by a number is twelve
60 - n = 12
500
Write the algebraic equation: Twelve less than a number is twenty-one.
n - 12 = 21
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