Question

Can you explain your answer please

Answer 1

68.145
As a mixed number this is 68 145/1000

We can simplify the fraction part by dividing top and bottom by 5:-

= 68 29/200

Answer 2

68.145
= 68+0.145
= 68+145/1000
( gcd(145,1000) = 5 )
= 68+29/200
= 13629/200
= 68 29/200

Because 68 is the whole number, and 29/200 = 0.145, which is simplified from 145/1000, because the decimals go to the thousandths place.