How do you convert 49/121 into a decimal and percent?

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Answer 1 · 2016-07-28T23:43:08

#49 div 121 = 0.405 " 3 d.p."#

#49 div 121 = 40.496%#

PLAN A: For many fractions we can find an equivalent fraction where the denominator is a power of 10. This gives a decimal and a percent immediately.

#3/4 = 75/100 = 0.75 = 75%#

#121 # can never be changed into a power of 10.

PLAN B: #49/121# means #49 div 121#

#49 div 121 = 0.404958677.........#

This will have to be rounded off to a given number of decimal places.

#49 div 121 = 0.405 " 3 d.p."#

#49 div 121 = 40.496%#

The rounding depends on the accuracy required.