GED Math Detailed Study Guide

A comprehensive set of flashcards covering essential math concepts for the GED exam, including formulas for percentages, ratios, geometry, algebra, and statistics.

What is the percent formula used to find a part?

part = percent × whole.

How do you solve ratios using cross multiplication?

Cross multiply the terms in the ratio.

What is the result of multiplying two negative numbers?

The result is positive.

What happens to the inequality sign when you multiply or divide by a negative number?

Flip the inequality sign.

What is the formula for finding the slope between two points (x1, y1) and (x2, y2)?

Slope = (y2 - y1) / (x2 - x1).

What is the slope-intercept formula for a linear equation?

y = mx + b.

How do you find the area of a rectangle?

Area = length × width (lw).

What is the formula for the area of a triangle?

Area = 1/2 × base × height (1/2 bh).

How do you calculate the area of a circle?

Area = πr².

What is the formula for the circumference of a circle?

Circumference = 2πr.

What does the Pythagorean theorem state?

a² + b² = c², where c is the hypotenuse.

How do you find the volume of a cylinder?

Volume = πr²h.

What is the formula for the volume of a cone?

Volume = 1/3πr²h.

How do you calculate the volume of a prism?

Volume = length × width × height (lwh).

What does the mean represent in statistics?

The average of a set of numbers.

What is the median in a set of data?

The middle value when the data is arranged in order.

What is the mode in a set of data?

The value that occurs most frequently.

How do you find the range of a data set?

Range = maximum value - minimum value.

What is the formula for calculating probability?

Probability = favorable outcomes / total outcomes.

What do you do with the probabilities of two independent events?

Multiply the probabilities.