Pre-Algebra 14.3 - Decimals

In this section, we will uncover an alternate method of representing fractions that does not require two separate integers. We will find that it is both possible and convenient to show fractions as single numbers whose values are visually clear. Our gain in convenience, unfortunately, will come with a loss of some mathematical precision. The method that we will be using is a form called “decimal numbers.” From the beginning, you have been totally used to seeing and writing whole numbers in decimal form. You have also seen how whole numbers can be shown as equally-spaced points on a number line.

Decimals

Numbers and Arithmetic

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Visual Math Learning is a free educational web site featuring an interactive on-line tutorial for teaching elementary mathematics and basic arithmetic for grades K-12 at the pre-algebra level. It is an instructional aid for parents, teachers, and educators of primary, elementary, and middle school students, as well as a resource for lesson plans, homework help, and home schooling math lessons. The tutorial includes games, puzzles, interactive diagrams, and computer animated virtual manipulatives that emphasize active learning concepts by visualization.