Practice Material

First some basic number terms:

Terms

Description

Base

The foundational value of a number system which dictates the number of digits and the value of digit positions.

Positional notation

A system of expressing numbers in which the digits are arranged in succession, the position of each digit has a place value, and the number is equal to the sum of the products of each digit by its place value.

Number

A unit of an abstract mathematical system subject to the laws of arithmetic.

Natural number

The number 0 and any number obtained by repeatedly adding 1 to it.

Integer

A natural number, a negative of a natural number, or zero.

Negative number

A value less than 0, with a sign opposite to its positive counterpart.

Rational number

An integer or the quotient of two integers (division by zero excluded).

Real number

A value that represents a quantity along a continuous line; rational numbers are real numbers.