1- and 2-Step Equations

1-Step

100

x + 3 = 10

x = 7

200

X-4=7

X-4=7 +4 +4 X=11 CHECK! 11-4=11

300

x−21=6

x−21=6 +21 +21 x=27 CHECK:27-21=6

400

k+10=27

k+10=27 -10 -10 k=17 CHECK:17+10=27

500

29=p+20

29=p+20 -20 -20 9=p 9+20=29

2-Step

100

2x + 2 = 10

x = 4

200

29=5+8b

8b+5=29 Check:3x8+5=29 -5 -5 8b=24 --------- 8 8 b=3

300

67=11n+1

67=11n+1 1+11n=67 -1 -1 11n=66

400

3q - 21 = 27

q = 16

500

j/2+7=12

j/2+7=12 -7 -7 Check:10/2+7=12 j/2=5 2x2 5x2 j=10

More 1-Step

100

3x = 15

x = 5

200

y/4 = 2

y = 8

300

a/7=9

a/7=9 x7 x7 a=63 Check:63/7=9

400

2=f/8 ​​

2=f/8 x8 x8 16=f Check:16/2=8

500

-2y=18

-2y=18 --------- -2 -2 Check:-2y=18 y=19 12(19)=18

Inverse Operations/Vocab

100

Inverse of addition

subtraction

200

inverse of division

multiplication

300

isolate the variable

get the variable by itself

400

What is a variable?

a letter that stands for an unknown number (x, y, a, etc)

500

What does it mean to substitute?

replace the variable with a number

Random

100

What is the shortest month of the year?

February

200

How many children does Ms. O have?

0

300

What is the largest planet in our solar system?

Jupiter

400

What are the three primary colors?

Red, yellow and blue

500

How many hearts does an octopus have?

Three