0.278 as a fraction is 278/1000. There is no work to show because this can be done in your head. We know that the 8 in the decimal is in thousandths place, so 278 will be the numerator and 1000 will be the denominator. To simplify the fraction, divide both numbers by 2:
278 divided by 2 is 139. 1000 divided by 4 is 500. Simplified, 278/1000 is 139/500.
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71/100
571/100 5 and 71/100
Say we had 2 ½, so we would work it out like 4⁄4,+ 4⁄4 + ¼ = 9⁄4. The 9⁄4 is the improper fraction.
78/100000
It is 8.70 - there is no work to show!