Solving and Writing 1 & 2 Step Equations

OPERATIONS

100

What operation is needed to solve the equation: 

p − 254 = 765?

Addition

200

What is the inverse operation of multiplication?

Division

300

What operation would isolate x in: x + 9 = 15?

Subtraction

400

True or False: To undo subtraction, you subtract. If falso, givethe correct answer.

False, add.

500

What operation would isolate x in: 7x = 70?

Division

WRITING EQUATIONS

100

Write an equation for: “A number increased by 5 equals 12.”

x + 5 = 12

200

Write an equation for: “5 less than a number is 20.”

x - 5 = 20

400

Miss Violet has 16 granola bars and needs 100 total. Boxes have 12 bars. Write an equation that works.

16 + 12x = 100

500

A contractor buys 525 metal bars (b). The wholesaler gives him a discount of $475. The total price is $3,750. Write an equation to find the cost of one metal bar.

525b − 475 = 3750

Solving Equations

100

Solve: x − 5 = −2

x = 3

200

Solve: x/3 = 4

x = 12

300

Solve: 2x − 13 = 1

x = 7

400

Solve: −5n + 8 = 43

n = -7

500

Solve 3(5b + 6) = 48

b = -0.8