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DECIMAL BASICS

DECIMAL BASICS. Representing, Comparing, Ordering, and Rounding Decimals. Representing Decimals. thousands. ten-thousandths. thousandths. hundredths. hundreds. tenths. tens. ones. 1. 100. 10. 1000. 0.1. 0.01. 0.001. 0.0001. Write each number in word form. a. 23.108.

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DECIMAL BASICS

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  1. DECIMAL BASICS Representing, Comparing, Ordering, and Rounding Decimals

  2. Representing Decimals thousands ten-thousandths thousandths hundredths hundreds tenths tens ones 1 100 10 1000 0.1 0.01 0.001 0.0001

  3. Write each number in word form. a. 23.108 Twenty-three andone hundred eightthousandths and represents the decimal number behind the decimal last digit’s place value

  4. Write each number in word form. b. 1024.06 One thousand twenty-four and six hundredths

  5. Standard Form Standard form is the usual way to write a number.

  6. Write each number in standard form. a. Seventy-six and one hundred three thousandths b. Fifty-nine and sixty-two thousandths c. Eight thousandths d. Three and four hundredths 76.103 59.062 0.008 3.04

  7. COMPARING AND ORDERING DECIMALS • Line up the numbers by _________________. • Starting at the ______ and find the first place the digits are __________. • Compare the different digits. the decimal points left different

  8. Use <, >, or = to compare the following numbers. • 0.594 _____ 0.562 > 0.594 0.562

  9. Use <, >, or = to compare the following numbers. • 29.64 _____ 29.84 • 1.202 _____ 1.2020 < =

  10. Ordering Numbers from Least to Greatest • Order 25, 25.1, 24.36, 25.03 from least to greatest. Line up the numbers! 25 25.1 24.36 25.03

  11. Ordering Numbers from Greatest to Least Order 71, 71.04, 70.89, and 71.4 from greatest to least 71.4, 71.04, 71, 70.89

  12. ROUNDING DECIMALS Underline • ____________ the digit to be rounded. • Look at the __________________ • _____ or greater – round up one • _____ or less – stays the same • Keep all the digits in front the _______ and all those behind dropped or turn to _______. digit to the right 5 4 same zero

  13. Round Each Decimal • 7.601; ones 7.601 8

  14. Round Each Decimal 2) 68.94; tenths 3) $13.75; nearest dollar 4) $2.1493; nearest cent 5) 1919.9199; thousandths 68.9 $14 $2.15 1919.920

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