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Decimals are ratios like fractions. Writing decimals only requires ten numbers and a decimal point. Unlike fractions, decimals can be added and subtracted without first finding a common denominator. To read more on how decimals are similar to fractions, see How To Convert Fractions.
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Background
Decimals have been used in China from the beginning of writing in China. Written records in China go back to the Shang Dynasty, which began in 1766 BC. The symbolic writing used in China lent itself to place-based values from the beginning. It was easier to give a value to the placement of ten different symbols than it would have been to go on inventing a different symbol for every number into infinity. For example: a written account of 547 days in thirteenth century China notes 547 in symbols as five of hundreds, 4 of decades, and seven of days. Arabic and Hindu traders brought decimals from China to the Mediterranean world in 976 AD. http://www.endlesssearch.co.uk/philo_enneagram_dec.htm
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Mahalo Answers for Decimals
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In Perl the xls2csv function from Spreadsheet::XLSX::Utility2007 rounds off to two decimal places, why? 2 AnswersOn line 987 of Utility2007.pm, change $output .= $cell->Value if(defined $cell); to $output .= $cell->unformatted if(defined $cell); and then save your change... read more -
what is pi to the 200th decimal place? 8 Answers3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745... read more -
Does anyone know how many decimal places an em would go to 1.xxxxxxx ? 1 AnswerWhat is an "em"? read more
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On Twitter Powered by Twitter
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Know about Business Math: Fractions, Decimals, and Percents: http://www.college-cram.com/study/businessmath/presentations/718
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Adding one to two figures with moving decimals: Cells U2:AC2 have 1000-9000 lbs. Cells S3:S14 have Compartments.. http://bit.ly/5Ho012
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Adding one to two figures with moving decimals http://bit.ly/82RApG
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I am so proud of the kids! They did fantastic on their fractions and decimals test. Love their minds! Look for the graded papers on Tues.
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@missdiamond baby to tha square root wit thr3 decimals I love you
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