Advertisement.

EnchantedLearning.com is a user-supported site.
As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
Click here to learn more.

ad
(Already a member? Click here.)


You might also like:
X: Illustrated Math Dictionary - Enchanted Learning.comU: Illustrated Math Dictionary - Enchanted Learning.comR: Illustrated Math Dictionary - Enchanted Learning.comY: Illustrated Math Dictionary - Enchanted Learning.comO: Illustrated Math Dictionary - Enchanted Learning.comToday's featured page: Star Death



Our subscribers' grade-level estimate for this page: 5th - 6th

+, -
EnchantedLearning.com
Math Dictionary
x, ÷
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
i in Morse Code 
I is for ...
i in Braille


I

I equals 1 in Roman numerals.


i

i is an imaginary number, defined as the square root of negative one.


icosahedron

An icosahedron is a twenty-sided geometric solid.
0

identity for addition

The additive identity is the number zero because zero plus any number is equal to the original number. For example, 2 + 0 = 0 + 2 = 2.
1

identity for multiplication

The identity for multiplication (also called the multiplicative identity) is one, because a times 1 = 1 times a = a. For example, 2 times 1 = 1 times 2 = 2.


illusion

An illusion is something that tricks your eyes.
i

imaginary number

An imaginary number is a number of the form bi, where i is the square root of negative one and b is a real number.
Improper Fractions

improper fraction

An improper fraction is one whose numerator is larger than the denominator (like 5/4). Improper fractions can be written as a mixed number, a number plus a fraction (5/4 = 1 1/4).


inch

An inch is a unit of measurement that is equal to one-twelfth of a foot. The symbol for inch is ".
= Equal 1 = 1
> Greater Than 2 > 1
< Less Than 1 < 3


inequality

An inequality is a mathematical expression that contains an inequality symbol. The inequality symbols are :

< less than (1<2)
> greater than (2>1)
≤ less than or equal to
≥ greater than or equal to
≠ not equal to (1≠2).



infinity

Infinity is a concept of endlessness. The symbol above represents infinity.


integer

The integers are the numbers ..., -3, -2, -1, 0, 1, 2, ....


intersection

An intersection is where two or more things, like roads or sets, meet or overlap. The intersection of two sets is the set of objects that belong to both of the original sets.


inverse property of addition

The inverse property of addition states that for every number a, a + (-a) = 0 (zero).


inverse property of multiplication

The inverse property of multiplication states that for every non-zero number a, a times (1/a) = 1.


irrational number

An irrational number is a number that cannot be written as a fraction (like a/b, where a and b are whole numbers and b is ≠ 0). For example, the square root of 2 is an irrational number.


isosceles triangle

An isosceles triangle has two sides that are the same length and two angles that are the same.

+, -
EnchantedLearning.com
Math Dictionary
x, ÷
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Counting Addition Subtraction Multiplication Division
Number Line Fractions Decimals Graphs Measurement Rounding

Click on an underlined word for more information on that subject. If the math term you are looking for is not in the dictionary, please e-mail us.


Enchanted Learning®
Over 35,000 Web Pages
Sample Pages for Prospective Subscribers, or click below

Overview of Site
What's New
Enchanted Learning Home
Monthly Activity Calendar
Books to Print
Site Index

K-3
Crafts
K-3 Themes
Little Explorers
Picture dictionary
PreK/K Activities
Rebus Rhymes
Stories
Writing
Cloze Activities
Essay Topics
Newspaper
Writing Activities
Parts of Speech

Fiction
The Test of Time
iPhone app
TapQuiz Maps - free iPhone Geography Game

Biology
Animal Printouts
Biology Label Printouts
Biomes
Birds
Butterflies
Dinosaurs
Food Chain
Human Anatomy
Mammals
Plants
Rainforests
Sharks
Whales
Physical Sciences: K-12
Astronomy
The Earth
Geology
Hurricanes
Landforms
Oceans
Tsunami
Volcano
Languages
Dutch
French
German
Italian
Japanese (Romaji)
Portuguese
Spanish
Swedish
Geography/History
Explorers
Flags
Geography
Inventors
US History

Other Topics
Art and Artists
Calendars
College Finder
Crafts
Graphic Organizers
Label Me! Printouts
Math
Music
Word Wheels

Click to read our Privacy Policy

E-mail


Enchanted Learning Search

Search the Enchanted Learning website for:



Advertisement.



Advertisement.



Advertisement.


Copyright ©2004-2016 EnchantedLearning.com ------ How to cite a web page