1. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Chapter 4 Decimals

2. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. 4.1 Introduction to Decimals

3. Martin-Gay, Developmental Mathematics, 2e 33 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Decimal Notation and Writing Decimals in Words Like fractional notation, decimal notation is used to denote a part of a whole. Numbers written in decimal notation are called decimal numbers, or simply decimals. Place names and place values for the decimal parts are also shown.

4. Martin-Gay, Developmental Mathematics, 2e 44 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Writing and Reading Decimals in Words

5. Martin-Gay, Developmental Mathematics, 2e 55 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Write the decimals in words. a.3.6 three and six tenths b.124. 52 one hundred twenty-four and fifty- two hundredths

6. Martin-Gay, Developmental Mathematics, 2e 66 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Write each decimal in standard form. a.Twelve and six hundredths 12.06 b.Fifty-four and seventy-two thousandths 54.072

7. Martin-Gay, Developmental Mathematics, 2e 77 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Writing Decimals as Fractions DecimalIn WordsFraction 0.5 five tenths 0.36 thirty-six hundredths 0.002 two thousandths 0.07 seven hundredths

8. Martin-Gay, Developmental Mathematics, 2e 88 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Write the decimals as a fraction or mixed number. a.0.9 b.21.094 1 decimal place1 zero 3 decimal places3 zeros

9. Martin-Gay, Developmental Mathematics, 2e 99 Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall. Examples Write each fraction as a decimal. a. = 0.6 b. = 36.005 1 decimal place 1 zero 3 decimal places 3 zeros