this is due to the fact that 1/3 as a decimal is 0.33333333333 and its a repeating decimal meaning it goes on forever but the thousandths place is less than five so nothing changes to the hundredths place
well you can divide 1 ÷ 3 and get 0.3 repeating (0.333333) so you can round that to 0.3 because 3 is lower than 5 therefore you can round it to 4 so your answer is 0.3
