Solving One-Step Equation Gen Ed

Addition

Subtraction

Random

Mixed Bag

100

r + 12 = 25

-12 = -12

r = 13

100

19 = j - 5

+5 = +5

j = 24

100

What is the inverse operation of subtraction?

Addition

100

Find the mistake:

z + 36 = 57

+ 36 =+36

z = 93

Instead of adding 36 on both sides, we should have subtracted 36 on both sides.

200

32 = c + 20

32 = c +20

-20 = -20

c = 12

200

w - 43 = 15

+43 = +43

w = 58

200

When solving one step equations, how will I verify if my answer is correct?

Subtitution (by substituting the vaule of the varible back in to the original equation).

200

y + 1/2 = 1/2

-1/2 = -1/2

y = 0

300

11 + n = 11

-11 = -11

n = 0

300

x - 31 = 64

+31 = +31

x = 95

300

What is the difference between an expression and an equation?

An expression is a mathematical phrase that does not contain an equal sign; however, an equation is a mathematical sentence that contains an equal sign

300

y - 15 = 5.8

+15 = +15

y = 20.8

400

70 = 11 + k

-11 = -11

k = 59

400

x - 95 = 57

+95 = +95

x = 152

400

What would you do to isolate the variable?

-20.9 = b - 3.4

Add 3.4 on the right side of the equation

400

Last week, Perry ran 30 miles more than DeShawn. Perry ran 46 miles. Use the equation d + 30 = 46 to find how many miles DeShawn ran.

d + 30 = 46

- 30 = - 30

d = 16

500

x + 645 = 1248

-645 = -645

x = 603

500

1036 = y - 581

+581 = +581

y = 1617

500

What are the step in solving one step equations?

Isolate the variable on one side of the equation.
Apply the inverse operation to both side of the equation
Check your work by substitution (substitute the value of the variable back in to the equation).

500

93.4 = x + 91.5

-91.5 = -91.5

x = 1.9