one step equations

adding equations

100

3 + a = 8

a=5

200

^{$ + 100 =104}

$=4

300

p + 700= 800

p= 100

400

120 + K = 200

K= 80

subtracting equations

100

5 - a = 4

a=1

200

B - 50 = 10

B=60

300

22 - # = 15

#=7

400

Z - 15 = 40

Z=55

multiplying equations

100

s x 8 = 16

s=2

200

i + 2 = 20 

i=10

300

Y x 1 = 1 

Y=1

400

9,862 x W = 0

W=0

Review

100

What is the rule for this pattern? 

90, 80, 70, 60, 50

subtract 10

200

What is the next number in this pattern? 

9, 12, 15, 18, ___

21

300

What is the next number in the following pattern? 

90, 85, 80, 75, 70, ___

65

400

Kelly spent 10 dollars to buy supplies for her lemonade stand. She sold 20 cups for $2 a piece. How much does she profit? 

$30