Solving One-step Equations

Inverse Operations

100

Whats is the Inverse Operation of Subtraction

Addition

200

What is the Inverse Operation of Addition

Subtraction

300

What is the Inverse Operation of Division

Multiplication

400

What is the Inverse Operation of Multiplication

Division

500

Spencer bought baseball cards to add to his collection.  He gave 10 cards to his brother.  If he now has 51 cards, how many cards does he have to start?

61

Solving Equations By Subtracting

100

Solve x+10=54

44

200

a+13=24

11

300

b+3.6=6.1

2.5

400

c+56=200

144

500

Nataly picked 42 strawberries at a farm.  This is 15 more that the # of apples she picked.  Write and solve an addition equation to find the # of apples picked.

x + 15 = 42; 27

Solving Equations By Adding

100

j-34=200

234

200

h-46=898

944

300

n-6.2=15.1

21.3

400

j-1.2=1.7

2.9

500

Lily noticed that she has taken notes on 22 pages of her notebook.  Seventy-five pages were still blank.  Write and solve a subtraction problem to find the total number of pages in the notebook.

n - 22 = 75; 97

Solving Equations By Multiplying

100

r/6=390

2,340

200

t/30=60

1800

300

r/50=70

3500

400

x/5=95

475

500

Dylan bought 3 notebooks that cost $4 each and 2 packages of highlighters that cost $3 each.  How much $ did Dylan spend on new school supplies?

$18

Solving Equations By Dividing

100

7.8h=15.6

2

200

4x=344

86

300

3h=516

172

400

5c=500

100

500

Mr. Davidson spent $15.00 on rides at the carnival for his grandchildren.  Each ride cost $1.25.  Write and solve an equation to find how many rides he paid for in all.

15/1.25 = c; 12 rides