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Chapter 1.2

Chapter 1.2. Place Value with Decimals. How do I know what kind of decimal it is?. The name of a decimal is determined by the number of places to the right of the decimal point. What are mixed decimals?. Mixed decimals are numbers with both whole numbers and decimals

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Chapter 1.2

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  1. Chapter 1.2 Place Value with Decimals

  2. How do I know what kind of decimal it is? The name of a decimal is determined by the number of places to the right of the decimal point

  3. What are mixed decimals? • Mixed decimals are numbers with both whole numbers and decimals • The name of a whole number is determined by the number of places to the left of the decimal point • 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

  4. How do you read decimals? • To read a decimal correctly, first find the decimal point • Whole numbers are to the left of the decimal point; any numbers to the right of a decimal point form a decimal fraction • Say “and” for the decimal point • The decimal 2164.511 is read as “two thousand, one hundred sixty-four and five hundred eleven thousandths”

  5. Zeros after the decimal point • Writing extra zeros after the decimal point does not change the value! • The decimals 0.2, 0.20, and 0.200 are equivalent decimals

  6. Practice Here are some practice problems in which I will work through with you to make sure that you understand the main concepts covered.

  7. Exercise 1 Write the decimals. Five thousandths Ninety-four thousandths Three hundred thirty-six and sixty-nine hundredths

  8. Exercise 2 Write each decimal in words. 7884.011 5592.4 4.203 612.250 10.44

  9. Exercise 3 In what place (on the place value chart) is the underlined digit? Write the answer. 1.475 3.763 7780.215 412.407 902.103

  10. Exercise 4 Write a decimal that has the same number. 0.2 5.51 410.6 753.809

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