Basic Math For Dummies

Basic Math For Dummies

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Basic Math

How to Calculate Percentages

Whether you’re leaving a tip at a restaurant or figuring out just how much those stylish shoes are on sale, you can’t get away from percentages. While there are numerous percentage calculators online, it’s helpful to be able to do some quick math in your head to calculate percentages without any digital assistance. Before you can calculate a percentage, you s...

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Basic Math

How to Divide Big Numbers with Long Division

To divide larger numbers, use long division. Unlike...

Basic Math

How to Borrow When Subtracting

Sometimes, when you are subtracting large numbers, the top digit in a column is smaller than the bottom digit in that column....

Basic Math

Using Your Body to Estimate Length

Many real-life math problems don’t require exact solutions or precise calculations. When you need an approximate id...

Basic Math

How to Memorize the Multiplication Table

If you have trouble multiplying numbers, then you shoul...

Basic Math

How to Divide Numbers on the Number Line

You can use the number line to divide. For example, suppose you want to divide 6 by some other number. First, draw...

Basic Math

How to Tell the Difference between Numbers and Digits

Sometimes people confuse numbers and digits. The number system you’re most familiar with —...

Basic Math

How to Subtract Numbers

Subtraction is usually the second operation you discover, and it’s not much harder than addition. In fact, you can subtract la...

Basic Math

How to Add, Subtract, Multiply, and Divide with Units

Anything that can be counted is a unit. Because you can count units, this means that you can apply the...

Basic Math

How to Identify the Place Value Digits within Numbers

Place value assigns each digit in a number system a greater or lesser value depending upon where it ap...

Basic Math

Calculating Speed, Time, and Distance

If you drive a car or have ever flown in an airplane, you’ve probably noticed that time, speed, and distance are...

Basic Math

How to Read Long Numbers

When you write a long number, you use commas to separate periods. Periods are simply groups of three numbers. They help make long n...

Basic Math

How to Round Numbers Up and Down

Rounding numbers makes long numbers easier to work with. To round a two-digit number to the nearest ten, simply increase it...

Basic Math

How to Do Inverse Operations

Each of the Big Four operations (addition, subtraction, multiplication, division) has an inverse — an operation that undo...

Basic Math

How to Tell Placeholders from Leading Zeros

It is important to know when a zero is a placeholder, and when it is a leading zero. Although the digit 0 adds n...

Basic Math

How to Add Large Numbers Using Column Addition

When you want to add large numbers, you can stack...

Basic Math

How to Multiply with the Number Line

Suppose you start at 0 and circle every other number on a number line, as shown in the below figure. As you can see, al...

Basic Math

How to Do Long Division by One Number

In the olden days, knowing how to divide large numbers was...

Basic Math

The Number Line and Addition, Subtraction, Multiplication, and Division

The number line is just...

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