How do you write two decimals that are equivalent to #2.50#?

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Mar 12, 2018

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How about: #2.4dot9 and 0.25xx10^1#

Explanation:

(i) #2.4dot9# (read "2.4 9 recurring") is equivalent to 2.50 since rounding the infinite decimal at any finite point will result in #2.50#

(ii) #2.50# would not usually be written in scientific notation (as it is #2.5 xx 10^0#). However it could be written as #0.25 xx 10^1#

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