Algebra I One Step & Two Step Equations

Random?

100

An equation has an.....

Equal Sign (=)

200

The letter in an equation is called the....

variable

300

What is an inverse operation?

The opposite of a given operation.

400

When solving an equation, what is the goal?

To isolate the variable

500

What is the inverse operation of (3/8)x

Multiply by the reciprocal of 8/3 or 3/8x (8/3) = 1x

One Step Equations

100

x − 7 = 13

x = 20

200

m − 9 = −13

m =  -4

300

4x = 72

x = 18

400

m/16=8

m = 128

500

4+ p=11

p  =7

Two Step Equations

100

−9x + 1 = −80

x= 9

200

−15 = −4m + 5

m= 5

300

10 − 6v = −104

v= 19

400

−9x − 13 = −103

x= 10

500

-8a + 1 = -23

a= 3

Two Step Equations

100

-2=2+v/4

v= 16

200

-6=n/2-10

n= 8

300

x/8+4=13

x= 72

400

-6+x/4=-5

x= 4

500

b/(-8)+10=4

b = 48

Word Problems

100

Twice a number is 34.

 n= 17

200

Your class budgets money from the class treasury for a school dance. Decorations will cost $50. The DJ charges $30 per hour. If your class has a total of $170 to spend on the dance, how many hours can you pay a DJ?

DOUBLE VALUE

30h + 50 = 170 

h= 4 hours

300

You want to go to Africa for a photo safari. You need a total of $2,800. You can get $1,000 from your savings account and you can save $30 per week. How many weeks will it take you to save up for the trip?

DOUBLE VALUE

1,000 + 30w = 2,800

 w = 90

400

You earn $15 per hour at your job. Each way, you pay $2.50 in bus fare. How many hours do you have to work in a day to take home $100?

DOUBLE VALUE

15h - 5 = 100 

h= 7 hours.

500

The computer club sells 50 more than 3 times the number of pins the chess club sells. The computer club sold a total of 134 pins. How many pins does the chess club sell?

DOUBLE VALUE

3p + 50 =134 

p= 28