Normal Equations
Rules of Math
Word Problems and Proportions
Inequalities
PEMDAS
100

Resolve the following equation:

3x - 1 = 8

x = 3

100

The phrase used to describe part of an equation. (I.E. [2x] [+ 4] [-3] = [11])

Term.

100

Write the Proportion for the following question:

In a rail yard, 2 out of every 30 train cars are engines. If there are 75 train cars, how many train cars are engines?

2 / 30 = / 75

100

Resolve the following inequality:

x - (3)(5) < 4

x < 19

100

The six words which PEMDAS stands for.

Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction.

200

Resolve the following equation:

5x - 1 = 24

x = 5

200

The thing that you must do to the variable in order to solve an equation.

Isolate the variable.

200

Write the inequality for this question:

The difference of twice a number and two is less than ten.

2n - 2 < 10

200

Resolve the following inequality:

x - 12 > 3

x > 15

200

The first part of this operation that must be done:

10 + 14 + 5 - 10 = ?

[10 + 14]

300

Resolve the following equation:

2 + (2b - 4) = 20

b = 11

300

This tiny number is placed next to a number like this 53, and is used to represent how many times that number is multiplied. (I.E. 53 = 5 * 5 * 5 = 125)

Exponent.

300

Write an inequality for this word problem:

Four times a number is more than the sum of the number and twelve.

4n > n + 12

300

Resolve the following inequality:

3b < 9

b < 3

300

The direction a problem is worked from, and towards.
(I.E. from up-to-down.)

Left-to-right.
400

Resolve the following equation:

-16 - 10 - 2d = 5d + 7

d = -11

400

If you do something to one side of the equation, you must do this to the other sides:

The exact same thing.

400

Write a the inequality for this word problem:

Six less than the product of three and a number is less than nine.

3n - 6 > 9

400

Resolve the following inequality:

2 + 10x - 4 < 18 + 5x

x < 4

400

The first part of this operation that must be done:

(10 + 6) / 2 - 3 = ?

(10 + 6)

500

Resolve the following equation:

3(n - 1) = 17 - n

n = 5

500

Something you can do when two terms possess the same variable with the same exponent. It helps you save time and trouble.

Combine like terms.

500

Write an proportion for this word problem:

A captain gives bay area tours. He gave 60 tours during the last 80 days. How many tours should he expect to give during the next 400 days?

60 / 80 = x / 400

500

Resolve the following inequality:

8 < p + 17 < 33

-9 < p < 16

500

What is PEMDAS also known as?

The Order of Operations.