Equations Review

Mixed Review

100

What are the names of the other two math teachers in 8th grade? 

Groninger

Schildmier 

Wood 

200

What are the first 3 digits of pi? 

3.14

300

What do you call an angle that is more than 90 degrees and less than 180 degrees? 

Supplementary Angles 

400

What do all three angles of a triangle add up to? 

180 degrees 

500

Who came up with the Pythagorean Theorem? 

Pythagoras 

Miscellaneous

100

6 = − w — 8

w = -14

200

7x = 35

x = 5

300

A machine prints 230 movie posters each hour. How many hours does it take the machine to print 1265 posters? 

5.5 hours 

400

You clean a community park for 6.5 hours. You earn $42.25. How much do you earn per hour?

$6.50

500

-9(a-4) = -5(a-4)

a = 4

Multi-step Equations

100

1/2(x-4)-2=4

x = 16

200

-3(2x-3) +2x = 45

x = -9

300

8x+2+4x=2(6x+1)

Infinitely Many Solutions 

400

10-2(3x-1)=6x+10

x = 1/6

500

4(7x+1) = -220

x = -8

Mixed Equations

100

14 = -12+x

x=26

200

x - 15 = 3

x= 18

300

3(x-4)=10

x= 22/3

400

2x+4= -(-7x+6)

x = 2

500

5.5-x = -4.5-x

No Solution 

Word Problems

100

John is 10 years older than Chris. In two years John will be twice as old as Chris. How old are they now? 

John= 10

Chris= 4 

200

A number tripled and then decreased by 5 equals 5 more than double the number. What is the number? 

10

300

The sum of a number and two-thirds the number is the same as 4 less than twice the number. What is the number? 

12

400

The product of 5 and 2 less than triple a number equals the product of 7 and 8 more than twice the number. What is the number? 

66

500

A coupon subtracts $17.95 from the price p of a pair of headphones. You pay $71.80 for the headphones after using the coupon. What was the original price of the headphones? 

p= $89.75