Expressions & Equations

What is the difference between an equation and an expression?

• They are spelled differently

• expressions have more terms than equations

• equations do not have = signs

• expressions do not have =signs

• none of the above

What is the math expression for three times a number?

• x+x+x

• 3x

• 3(x)

• All the above

What is the math expression for fifteen less than a number Y?

• 15-y

• y-15

• 15y

• y x 15

What is the math expression for a number Z divided by negative 5?

• -5/z

• 5z

• z/-5

• z(-5)

What is the math expression for thirty divided by the sum of seven and a number K?

• 30/7 + k

• 7/30 +k

• k + 30/7

• k + 7/30