Solving One-Step Equations

Solving One-Step Equations

2021-2022

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

Solving equations

• use inverse operations to isolate the variable

• keep the equation balanced by performing the same operation on both sides of the equals sign

Fill in the Blanks

Inverse means

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

3 = z + 6

• subtract 6 from both sides

• z = -3

r - ( -2 ) = -15

• rewrite as addition

• r + 2 = -15

• subtract 2 from both sides

• r = -17

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

-16 = -4p

• divide both sides by -4

• p = 4

k/3 = -30

• multiply both sides by 3

• k = -90

Multiple Choice

How do we solve -2k = -100?

• multiply by 2 on both sides

• divide by 2 on both sides

• add 100 to both sides

• divide by -2 on both sides

Multiple Choice

7 + g = 11

• g = 4

• g = -4

• g = 18

• g = -18

Multiple Choice

z/4 = -8

• z = -32

• z = 32

• z = 2

• z = -2

Poll

How do you feel about solving one-step equations?

• 1 - I'm totally lost and need some help.

• 2 - I am starting to get this!

• 3 - I understand what to do I just want more practice.

• 4 - I've got this! Let me do my work.

• 5 - I understand it so well I could help someone else if they need it!