How do you write 9/20 as a decimal?

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Answer 1 · 2017-03-06T00:32:38

#9/20 = 9 -: 20 = 0.45#

Another way to look at this is:

#9/20 = 9/20 xx 5/5 = (9 xx 5)/(20 xx 5) = 45/100 = 0.45#

Answer 2 · 2018-04-02T11:08:45

0.45

#9-:20#

#=> 9/20#

Convert the denominator into powers of 2 and 5.

#=> 9/(2xx2xx5#

#=> 9/(2^2xx5^1#

Now multiply both numerator and denominator with 5 to make the powers of 2 and 5 equal.

#=> (9xx5)/(2^2xx5xx5#

#=> 45/(2^2xx5^2#

You can combine the bases with same powers

#=> 45/10^2#

#=> 45/100#

#=> 0.45#

Hope it helps