Translating Expressions and Equations Sheila

Which matches the expression below?

2x + 5

• Five times a number increased by two.

• The sum of five and twice a number.

• Two more than the product of five and a number.

Which matches the expression below?

x −9

• Nine more than a number.

• The sum of a number and nine.

• A number decreased by nine.

Which matches the expression below?

2x − 8

• The difference of two and eight times a number.

• Eight less than the product of a number and two.

• Two times a number increased by eight.

Which matches the equation below?

3x −11 = 17

• Eleven less than the product of a number and three equals seventeen.

• Three times a number, increased by seventeen is eleven.

• Seventeen less than the product of three and a number is eleven.

What does "product" mean?

• Multiply
• Divide
• Add
• Subract

What is the difference between an expression and equation?

• Expressions have an equal sign and equations do not have an equal sign
• Expressions do not have an equal sign and equations do have an equal sign
• There is not a difference
• Expressions do not have variables and equations have variables

Translate this phrase into an algebraic expression.
8 less than the product of 4 and a number
Use the variable m to represent the unknown number.

• 8 - 4m
• 8m - 4
• 8m + 4
• 4m - 8

Write an algebraic expression for:
three times a number plus 16

• 3(16)+n
• 16n+3
• 3n+16

What does "difference" mean?

• add
• subtract 
• multiply
• divide

a number more than 12

• n + 12
• 12n 
• 12 + n 
• 12 - n