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It means 'recurring'

If you divide 1 by 3 on a calculator the answer will show as 0.333333333 but if the display had more digits they would all be 3 too. Even if there was a million digits they would all still be 3.

To show this you would normally show the answer to 2 or 3 decimal places followed by the mark - like this

0.333'

Unless it is a measurement and the answer is given in feet in which case 4' would mena 4 feet. 4'3" would mean 4 feet and 3 inches.

Hope this helps.

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15y ago

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