Page 300 - Basic College Mathematics with Early Integers

S E C T ION 4 .1 I INTRODUCTION TO DECIMALS 277

Example 1 Write each decimal in words. PRACTICE 1

Write each decimal in words.
a. 0.3 b. -5.82 c. 21.093
a. 0.08 b. -500.025
Solution: c. 0.0329
a. Three tenths
b. Negative five and eighty-two hundredths
c. Twenty-one and ninety-three thousandths
Work Practice 1

Example 2 Write the decimal in the following PRACTICE 2
sentence in words: The Golden Write the decimal 97.28 in
Jubilee Diamond is a 545.67-carat cut diamond. words.
(Source:The Guinness Book of Records)

Solution: five hundred forty-five and sixty-seven hundredths
Work Practice 2

Example 3 Write the decimal in Darwin PRACTICE 3
the following sen- Write the decimal 72.1085 in
tence in words: The oldest known frag- words.
ments of the Earth’s crust are Zircon
crystals; they were discovered in Australia
Brisbane
Australia and are thought to be 4.276
Perth
billion years old. (Source:The Guinness
Canberra Sydney
Book of Records)
Melbourne
Solution: four and two hundred seventy-six thousandths

Work Practice 3

Suppose that you are paying for a purchase of $368.42 at Circuit City by writing
a check. Checks are usually written using the following format.

Elayn Martin-Gay 60–8124/7233 1403
1000613331
(
DATE Current date (
PAY TO Circuit City $ 368.42
THE ORDER OF
42
/
Three hundred sixty-eight and 100 DOLLARS
FIRST STATE BANK
OF F A R THINGT ON
FARTHINGTON, IL 64422
MEMO Elayn Martin-Gay
Answers
1. a. eight hundredths b. negative
five hundred and twenty-five
thousandths c. three hundred
twenty-nine ten-thousandths
2. ninety-seven and twenty-eight
hundredths 3. seventy-two and one
thousand eighty-five ten-thousandths