About Real Numbers

So what exactly are real numbers, anyway? Explore this tutorial to learn about the number line, absolute value, and what kinds of numbers make up real numbers.

Real numbers are the collective set of rational numbers and irrational numbers.

Ration numbers are an expression of two integers as a ratio. They include:

• Natural numbers — the numbers we count with
• Whole numbers – the natural numbers including zero
• Integers — whole numbers including negative versions of natural numbers

Irrational numbers are numbers that cannot be expressed as a ratio of two integers.

Get More Help!

Click one of these links to get more help from another Cramlet in this same chapter:

• Decimals to Fractions
• Working With Radicals
• Rational Exponents
• Radicals and Roots
• Properties of Real Numbers
• Properties of Exponents
• Multiplying and Dividing Fractions
• Fractions, Decimals, and Percents
• Adding and Subtracting Un-Like Fractions
• Adding and Subtracting Like Fractions
• About Real Numbers
• About Exponents