Simple Algebra Expressions

Write an algebraic expression for "12 more than number". 

• x + 12
• 12x
• x - 12

Write an algebraic expression for "8 less than a number".          

• 8x
• x - 8
• 8 - x

Which phrase does NOT describe x + 6.

• The sum of x and six.
• six more than x.
• x increased by six. 
• The product of x and two.

Which of the expressions does NOT show the product of four and n. 

• 4n
• 4 x n
• 4(n)
• 4 ÷ n

The total of b and 14 

• 14 - b
• 14/b
• 14 + b 
• b - 14 

Which expression shows x decreased by 8?

• 8 - x
• 8 ÷ x
• x ÷ 8
• x - 8

Which expression shows the quotient of 8 and x

• x ÷ 8
• 8 ÷ x
• 8 - x
• 8x

Write an algebraic expression:
18 divided by a number

• 18 ÷ n
• 18 ÷ 7
• 18 × 3
• 18 × n

Write an algebraic expression for the difference between any two numbers.

• x - y
• 9 - 3
• x + y
• x ÷ y

Write the expression using an exponent:
r  x  r  x  r

• r¹
• r²
• r³
• rⁿ