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 +.