As a fraction, 0.8 is 8/10. Decimals can't be simplified (reduced to lowest terms), but fractions can. 8/10 when simplified is 4/5 .
0.8 as a fraction would be 8/10 or 4/5 also it is 80% if you need the percentage to :)
0.8 can be converted to a fraction by expressing it as 10 8 and then simplifying it to 5 4 .
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