Expressions and Equations

An expression is.....

• a math statement with an equal sign.

• a math statement without an equal sign.

• a letter or symbol that represents a number.

• a number that goes evenly into another number without a remainder.

An equation is.....

• a math statement with an equal sign.

• a math statement that does not have an equal sign.

• a letter or symbol that represents a number

• a number that goes evenly into another number without a remainder.

What is the difference between an expression and an equation?

• Expressions have an equal sign and equations do not.

• Equations have an equal sign and expressions do not.

Which of the following are true about an equation? (Select all that apply)

• Contains an equal sign.

• Has many solutions.

• May contain variables.

• Shows two expressions are equal.

Which of the following are expressions? (Select all that apply.)

• 3x  $\cdot$  4

• the difference of x and 8

• 2y

• 12 is 3 more than 9

Which of these is an equation?

• three times 2.5 plus r

• four less than twice b

• half the product of two and c

• five times d is 30