__N__

**Number
fine **A line where every
number can be represented by a point on the line

**Number
of arithmetic **A number that
can be written as a fraction

**Number sentence ** An
equation or inequality indicating the relationship between two mathematical
expressions.

**Numeral
**A name
or symbol used for a number

**Numerator
**The top portion of a
fraction

**Numerical coefficient ** In
an expression such as *ab, *the number
is the numerical coefficient of *ab.*

**Numerical expression ** An
expression that names a number, such as +.