## Featured Articles

#### Basic Math & Pre-Algebra

### 1,001 Basic Math & Pre-Algebra Practice Problems For Dummies

To successfully master basic math, you need to practice addition, subtraction, multiplication, and division problems. You also need to understand order of operations, fractions, decimals, percents, ratios, weights and measures, and even a little geometry. [more…]

#### Basic Math & Pre-Algebra

### How to Find the Least Common Multiple

The least common multiple (LCM) of a set of numbers is the lowest positive number that is a multiple of every number in that set. This article shows you how to find the LCM. [more…]

## Most Recent

#### Geometry

### Geometry For Dummies Cheat Sheet

Successfully understanding and studying geometry involves using strategies for your geometry proofs; knowing important equations; and being able to identify commonly used geometry symbols. [more…]

#### Geometry

### Common Geometry Symbols

Using geometry symbols will save time and space when writing proofs, properties, and figuring formulas. The most commonly used geometry symbols and their meanings are [more…]

#### Geometry

### Proof Strategies in Geometry

Knowing how to write two-column geometry proofs provides a solid basis for working with theorems. Practicing these strategies will help you write geometry proofs easily in no time: [more…]

#### Geometry

### Geometry Formulas and Other Important Stuff You Should Know

What follows are over three dozen of the most important geometry formulas, theorems, properties, and so on that you use for calculations. If you get stumped while working on a geometry problem and can't [more…]

#### Calculus

### Find a Cone's Volume Using the Disk/Washer Method — Practice Question

In addition to finding the volume of unusual shapes, integration can help you to derive volume formulas. For example, you can use the disk/washer method of integration to derive the formula for the volume [more…]