Benchmark 7 Review

Addition/Subtraction Equations

100

Solve the equation:

x - 4 = 10

x = 14

200

Solve the equation:

x + 7 = -9

x = -16

300

Solve the equation:

x + 35 = 15

x = -20

400

Solve the equation:

x + 3/4 = 5

x = 4 1/2, 4.5, or 9/2

500

Solve the equation:

x + 3/5 = 6

x = 5 2/5, 5.4. or 27/5

Multiplication/Division Equations

100

Solve the equation

n/2 = 6

n = 12

200

Solve the equation

-30 = 5x

x = -6

300

Solve the equation

-72 = 6x

x = -12

400

Solve the equation

6 = -3/5 x

x = -10

500

Solve the equation

6 = -3/4 x

x = -8

Solving Two Step Equations

100

Solve

2c + 5 = 13

 c = 4

200

Solve

3k + 4 = 10

k = 2

300

Solve:

8x + 14 = -18

x = -4

Writing Equations

100

Caleb earns $16 per hour doing yard work.  Last month he earned $128. 

PART 1: Which equation can be used to determine the number of hours (h) Caleb worked last month? 

A.  h + 16 = 128      B. 128h = 16       C. 16h = 128       D. h/16 = 128

PART 2: How many hours did Caleb work last month?

PART 1:  C

PART 2: 8

200

A group of friends spends $56 at the movies.  

PART 1: Which equation can be used to determine the amount of friends (f) that went to the movies if each ticket costs $14. 

A.  56f = 14     B.  56 + f = 14    C.  f + 14 = 56    D.  14f = 56

PART 2: How many friends went to the movies?

PART 1:  D

PART 2: 4

300

Adam buys a soda for $3.75. He also buys some cookies that cost $1.50 each. Adam spent a total of $9.75 Write an equation to show how many cookies Adam bought.

3.75 + 1.50x = 9.75  or  1.50x + 3.75 = 9.75

400

At Spring Oak Middle School, 40 band members need to raise a total of $4,250 for a trip. So far, they have raised $1,538.  

PART 1: Write an equation to show how much money, in dollars, per band member still needs to be raised for the trip.

PART 2: How much money, in dollars, per band member still needs to be raised for the trip?

Part 1: 40x + 1538 = 4250

Part 2: $67.80

500

The 7th grade classes at a middle school are collecting canned goods. The goal is to collect 4,500 cans. There has already been 750 cans collected.  

PART 1: Write an equation to show how many cans still need to be collected by each student if there are 125 students participating.

PART 2: How many cans still need to be collected by each student?

PART 1: 125x + 750 = 4500

PART 2: 30