<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

# Real Numbers

## Real numbers account for any given number, including integers, rational numbers, and irrational numbers. Learn more about real numbers with our modules below.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Real Numbers

The set of Real Numbers includes fractions, mixed numbers, positive and negative Integers, decimals, roots. The only numbers not included in the set of Real Numbers are Imaginary Numbers, such as the square root of -1.
MEMORY METER
This indicates how strong in your memory this concept is
23

## Real Numbers

MEMORY METER
This indicates how strong in your memory this concept is
0
• PLIX

Real Numbers Interactive
MEMORY METER
This indicates how strong in your memory this concept is
0
• PLIX

## Finding Patterns: Stars and Moons

Real Numbers Interactive
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

## Identifying Sets of Real Numbers

Describes the sets that a real number might belong to.
MEMORY METER
This indicates how strong in your memory this concept is
5
• Activity