One-Step Equations

One-Step Equations

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Expression

• mathematical phrase with a combination of numbers, variables, and operations

• does not have an equals sign

Multiple Choice

An expression has an equals sign.

• True

• False

Equation

• a mathematical sentence stating two expressions are equivalent

• has an equals sign

Multiple Choice

Which of the following has an equals sign?

• Equation

• Expression

Inverse Operation

opposite operations that undo each other

Match

Match each operation with its inverse.

• addition

• multiplication

• division

• subtraction

subtraction

division

multiplication

addition

• subtraction

• division

• multiplication

• addition

Solution to an Equation

value that, when substituted for the variable, makes both sides of the equation equal

Match

Match each equation to its solution.

• 2x + 4 = 12

• -2x + 3 = 5

• x/2 - 3 = -3

• x/3 + 1 = -1

• -3x + 2 = 11

x = 4

x = -1

x = 0

x = -6

x = -3

• x = 4

• x = -1

• x = 0

• x = -6

• x = -3

Multiple Choice

Which of the following inverse operations is incorrect?

• inverse of addition is subtraction

• inverse of multiplication is division

• inverse of division is squaring

• inverse of multiplication is division

x - 22 = 30

-86 = y - 11

Multiple Choice

How do we solve f - 12 = -4

• add -12 to both sides

• subtract 12 from both sides

• add 12 to both sides

• add 4 to both sides

-11a = 77

c/8 = 20

Multiple Choice

33 + z = 19

• z = -14

• z = 14

• z = 16

• z = -16

Multiple Choice

210 = 7b

• b = 30

• b = 3

• b = -30

• b = 217