      Module 6
Decimal Fractions

Overview

Throughout this module students will:
• explore decimal numbers via their relationship to decimal fractions
• express a given quantity in both fraction and decimal forms
• use understanding of fractions to explore tenths and hundredths
• write statements of equivalence in unit, fraction, and decimal forms
• compare decimal numbers
• solve word problems involving money

Vocabulary

 Terminology Definition Illustration Decimal number Number written using place value units that are powers of 10 Decimal expanded form Expanded notation represents a number as the sum of each of its digits multiplied by their place value e.g., Decimal fraction Fraction with a denominator of 10 or a power of 10 Decimal point Period used to separate the whole number part from the fractional part of a decimal number Expanded form A way to write numbers that shows the place value of each digit Fraction Numerical quantity that is not a whole number;  a way to describe a part of a whole or a part of a group by using equal parts Fraction expanded form Expanded notation represents a number as the sum of each of its digits multiplied by their place value e.g., Hundredth Place value unit such that 100 hundredths equals 1 one Tenth Place value unit such that 10 tenths equals 1 one   Dr. Peter Smith, Superintendent P.O. Box 606 DeWitt, NY 13214 Phone: (315) 445-8300 www.jamesvilledewitt.org