8th Grade Math Vocabulary

Any number that can be written as a fraction.

• rational number

• Irrational Number

• Base

• Exponent

A number that cannot be written as a fraction, terminating, decimal or repeating decimal.

• radical symbol

• power

• rational number

• irrational number

The number used as a factor when raised to a power

• index

• base

• radical symbol

• root

The number used to indicate how many times the base is used as a factor.

a number produced by raising a number to an exponent.

• power

• radical symbol

• root

• index

The symbol used to represent the nonnegative square root of a number.

• root

• radical symbol

• index

• perfect square

The number used as a factor in radicals.

• exponent

• power

• root

• index

The number above the radical symbol used to indicate the exponent used in the root.

• perfect square

• standard notation

• integers

• index

The square of a whole number

A method of writing very large or very small numbers by using powers of 10.

• base

• scientific notation

• standard notation

• radical symbol