Unknown and Easier

There are some questions on the GED that seem really hard until you know the trick or you just practice them a lot! These are essential math concepts to review before your test. I don't recommend trying to learn these for the first time the day before you test.

Absolute Value

Identify the absolute value of a rational number as its distance from 0 on the number line and find the distance between two rational numbers on the number line

Khan Academy Exercises

Use Counting Techniques

Use Counting Techniques to Solve Problems (Example: count how many different ways objects can be ordered arranged or combined)

Khan Academy Exercises

Missing Value Given the Mean

Find the mean, median, mode, and range of a number set. Find a missing value when given an average

Missing Value Given the Mean

Multiples and Factors

Find Multiples and factors (Example: Least common multiple, greatest common factor)

Khan Academy Exercises

Undefined Expressions

Know that expressions with a denominator of zero are "undefined" and have no solution

Khan Academy Exercises

Dividing by Zero

Recognize a Function

Recognize a function in a table or graph by determining whether or not there is only one output value for each input value

Reading Box Plots

Khan Academy Exercise

Reading Box Plots

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