Running times are measured in hundredths of seconds. For example, Usain Bolt ran 100 metres in 9.58 seconds (Berlin, 2009).
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There are many ways that people use decimals. One may encounter decimals when weighing fruits and vegetables at the grocery store. Decimals are also often used when keeping time, during a track meet or a marathon, for instance.
decimals are used when you have part of a whole for examle .362598798 is part of a whole
Decimals are part of arithmetic, in which the answer is expressed without vulgar fractions. Found in many fields of endeavour, - engineering, medicine, astronomy, nuclear physics ... . Indeed any field where calculations are used.
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The Chinese were the first to use decimals. Decimals were developed and used in the 1st century B.C. in China and then spread to the Middle East and Europe.