Place value with decimals

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Place value with decimals

  1. 2. BY DEEPAK KUMAR Place Value with Decimals
  2. 3. How do I know what kind of decimal it is? <ul><li>The name of a decimal is determined by the number of places to the right of the decimal point </li></ul>Number of Places Decimal Name Example 1 tenths 0.7 2 hundredths 0.05 3 thousandths 0.016
  3. 4. What are mixed decimals? <ul><li>Mixed decimals are numbers with both whole numbers and decimals </li></ul><ul><li>The name of a whole number is determined by the number of places to the left of the decimal point </li></ul><ul><ul><li>In the number 128.765, 1 is in the hundreds place, 2 is in the tens place, 8 is in the ones place, 7 is in the tenths place, 6 is in the hundredths place, and 5 is in the thousandths place </li></ul></ul>
  4. 5. How do you read decimals? <ul><li>To read a decimal correctly, first find the decimal point </li></ul><ul><li>Whole numbers are to the left of the decimal point; any numbers to the right of a decimal point form a decimal fraction </li></ul><ul><li>Say “and” for the decimal point </li></ul><ul><ul><li>The decimal 2164.511 is read as “two thousand, one hundred sixty-four and five hundred eleven thousandths” </li></ul></ul>
  5. 6. Zeros after the decimal point <ul><li>Writing extra zeros after the decimal point does not change the value! </li></ul><ul><ul><li>The decimals 0.2, 0.20, and 0.200 are equivalent decimals </li></ul></ul>
  6. 7. <ul><li>HERE ARE SOME PRACTICE PROBLEMS IN WHICH I WILL WORK THROUGH WITH YOU TO MAKE SURE THAT YOU UNDERSTAND THE MAIN CONCEPTS COVERED. </li></ul>Practice
  7. 8. Exercise 1 <ul><li>Write the decimals. </li></ul><ul><li>Five thousandths </li></ul><ul><li>Ninety-four thousandths </li></ul><ul><li>Three hundred thirty-six and sixty-nine hundredths </li></ul>
  8. 9. Exercise 2 <ul><li>Write each decimal in words. </li></ul><ul><li>7884.011 </li></ul><ul><li>5592.4 </li></ul><ul><li>4.203 </li></ul><ul><li>612.250 </li></ul><ul><li>10.44 </li></ul>
  9. 10. Exercise 3 <ul><li>In what place (on the place value chart) is the underlined digit? Write the answer. </li></ul><ul><li>1.4 7 5 </li></ul><ul><li>3 .763 </li></ul><ul><li>7780.21 5 </li></ul><ul><li>412. 4 07 </li></ul><ul><li>9 0 2.103 </li></ul>
  10. 11. Exercise 4 <ul><li>Write a decimal that has the same number. </li></ul><ul><li>0.2 </li></ul><ul><li>5.51 </li></ul><ul><li>410.6 </li></ul><ul><li>753.809 </li></ul>

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