The '9' is in the "first decimal" place and the '3' is in the "second decimal" place.
Rules for rounding
As the problem in this case is 3.93 and the number in the second decimal place is less than 5, we end up with
3.9 "correct to one decimal place" or "rounded to one decimal place".
3.3 rounded to 1 decimal place is 3.0.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
To one decimal place it is rounded to 0.9
Well, isn't that a happy little question! When we round 6.45 to 1 decimal place, we look at the digit in the second decimal place, which is 5. Since 5 is 5 or greater, we round up the first decimal place to 6. So, 6.45 rounded to 1 decimal place is 6.5.
It is 8.8
round 0.2975 to 1 decimal place = 0.3
Oh, dude, it's like super easy. So, to round 2.73 to 1 decimal place, you just look at the number right after the decimal point. If it's 5 or greater, you round the number up. In this case, 2.73 becomes 2.7 because 3 is less than 5. Easy peasy, lemon squeezy!
It is then 31.2 when rounded to 1 decimal place
6.5- you round it until it has one decimal.
4.96432 rounded to 1 decimal place is 5.0.
It is 4.1 when rounded to 1 decimal place
3.3 rounded to 1 decimal place is 3.0.
Go to the second decimal place; if it is less than 5; round down. If it is 5 or greater, round up. So, 1.51 rounded to 1 decimal place is 1.5.
To round 4.21 to 1 decimal place, you look at the digit in the second decimal place, which is 1. Since 1 is less than 5, you keep the digit in the first decimal place the same, which is 2. Therefore, rounding 4.21 to 1 decimal place gives you 4.2.
6.32 rounded to 1 decimal place = 6.3
because
334.4 is already in 1 decimal place