In this section you'll find study materials for pre-algebra help. Use the links below to find the area of pre-algebra you're looking for help with. Each study guide comes complete with an explanation, example problems, and practice problems with solutions to help you learn pre-algebra.
Many times it is not necessary to use an exact number. In this case, an approximate number can be used. Approximations can be obtained by rounding numbers. All numbers can be rounded to specific place values.
Subtraction of Whole Numbers
In subtraction, the top number is called the minuend . The number being subtracted (below the top number) is called the subtrahend . The answer in subtraction is called the ...
The Basic Concepts of Integers
The set of whole numbers consists of the numbers 0, 1, 2, 3, 4, 5, …. In algebra we extend the set of whole numbers by adding the negative numbers 1, 2, 3, 4, 5, …. The numbers ...