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The number 15.68 is read fifteen and sixty-eight hundredths .

Name a decimal number.

  • Name the number to the left of the decimal point.
  • Write “and” for the decimal point.
  • Name the “number” part to the right of the decimal point as if it were a whole number.
  • Name the decimal place of the last digit.

Name each decimal: 4.3 2.45 0.009 −15.571 .

Solution

4.3
Name the number to the left of the decimal point. four_____
Write "and" for the decimal point. four and_____
Name the number to the right of the decimal point as if it were a whole number. four and three_____
Name the decimal place of the last digit. four and three tenths
2.45
Name the number to the left of the decimal point. two_____
Write "and" for the decimal point. two and_____
Name the number to the right of the decimal point as if it were a whole number. two and forty-five_____
Name the decimal place of the last digit. two and forty-five hundredths
0.009
Name the number to the left of the decimal point. Zero is the number to the left of the decimal; it is not included in the name.
Name the number to the right of the decimal point as if it were a whole number. nine_____
Name the decimal place of the last digit. nine thousandths
15.571
Name the number to the left of the decimal point. negative fifteen
Write "and" for the decimal point. negative fifteen and_____
Name the number to the right of the decimal point as if it were a whole number. negative fifteen and five hundred seventy-one_____
Name the decimal place of the last digit. negative fifteen and five hundred seventy-one thousandths
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Name each decimal:

6.7 19.58 0.018 −2.053

  1. six and seven tenths
  2. nineteen and fifty-eight hundredths
  3. eighteen thousandths
  4. negative two and fifty-three thousandths

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Name each decimal:

5.8 3.57 0.005 −13.461

  1. five and eight tenths three and fifty-seven hundredths
  2. three and fifty-seven hundredths
  3. five thousandths
  4. negative thirteen and four hundred sixty-one thousandths

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Write decimals

Now we will translate the name of a decimal number into decimal notation. We will reverse the procedure we just used.

Let’s start by writing the number six and seventeen hundredths:

six and seventeen hundredths
The word and tells us to place a decimal point. ___.___
The word before and is the whole number; write it to the left of the decimal point. 6._____
The decimal part is seventeen hundredths.
Mark two places to the right of the decimal point for hundredths.
6._ _
Write the numerals for seventeen in the places marked. 6.17

Write fourteen and thirty-seven hundredths as a decimal.

Solution

fourteen and thirty-seven hundredths
Place a decimal point under the word ‘and’. ______. _________
Translate the words before ‘and’ into the whole number and place it to the left of the decimal point. 14. _________
Mark two places to the right of the decimal point for “hundredths”. 14.__ __
Translate the words after “and” and write the number to the right of the decimal point. 14.37
Fourteen and thirty-seven hundredths is written 14.37.
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Write as a decimal: thirteen and sixty-eight hundredths.

13.68

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Write as a decimal: five and eight hundred ninety-four thousandths.

5.894

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Practice Key Terms 1

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Source:  OpenStax, Prealgebra. OpenStax CNX. Jul 15, 2016 Download for free at http://legacy.cnx.org/content/col11756/1.9
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