What is the decimal of one thirth?

Answer 1

that would be 0.33 but it depends on the amount of decimal places you are using, the decimal of one third is infinite; never ends. for example 5 decimal places would be -> 0.33333
The decimal form of one third is the decimal .3 repeating,

so .333333.......
1 third = 0.33333.... [repeating 3] To signal that this is recurring there is a dot on top of the last three. This signals that the decimal is recurring and goes on forever. Usually people only write the first three places in a recurring decimal due to that it goes on forever.
1/3 is sorta messy as a decimal, as it translates into 0.33333 - and the threes just keep coming for as many as you care to use.