2356164.38 already has only 2 decimal places, so there is no need to round it.
0.938
Round it up - to 0.05
You would round it UP - to 0.05
0.45 is in two decimal places, so no further rounding is needed.
Look at the third decimal place. It is a 5, so it will round up the second decimal to give 0.69 as your answer.
15.33
3.1604 will 'round up' to 3.16
If you round 1.463884266 to two decimal places... you end up with 1.46
It's already showing 1 decimal place. If you wished to round it to a whole number - you would round up to 4.
round to 0.140 the ending numbers make you round up and if you must have 3 decimal places keep one ending zero
2 (if rounded to 2,1 or 0 decimal places).
You can't round on a calculator. You do it in your head. 4-1, you round down, 5-9, you round up.