0.01 and 0.02 down to 0.0
0.03 and 0.04 up to 0.5
0.06 and 0.07 down to 0.5
0.08 and 0.09 up to 1.0
if it is half or above you round up otherwise round down
Any fraction of the form N/2N is equivalent to 1/2 : 2/4, 3/6, 4/8, and so forth.
20.
No, it is not correct.
the answer is 0.051813471502590675129533678756 round to the nearest thousandths so it should be 0.052
The nearest gram is in the ones column, so we must look at the tenths column (the first number on the right of the decimal). If this number if 5 or higher then we must round up and report the value as 1.0 g or if it is lower than 5 then we report the answer as 0.0. All other numbers are irrelevant. In this case (0.[5]3525) the number we are concerned about (in the square brackets) is 5, therefore we round up and the answer is 1.0 g.
Fraction remaining = 0.5^n where n = # of half lives that have elapsed60 yrs x 1 half life/12 yrs = 5 half lives have elapsed Fraction remaining = 0.5^5 = 0.03125 mass remaining = 0.03125 x 80.0 g = 2.5 g remaining
If the fraction is less than half, round down. If the fraction is half or greater, round up.
You look at the fraction part (0.302) and see that it is less than one half, so you round it down to 2.
if the number after the first number after the decimal is 1-4, round it to 0. If it is 5-9, round it one higher number. EX: 4.56 rounds to 5.00, and 4.54 rounds to 4.50. They mostly round up to the nearest half number (like you said). It's not that hard to round numbers.
4.5 already is rounded to the nearest half.
To the nearest half, one half
1,500,000 is already rounded to the nearest half-million.
4/5 to the nearest half is 1.
53
6.5
5.5
It is 2.5
To the nearest whole number, 3