Oh, dude, rounding numbers is like, so basic. You just look at the fifth decimal place, which is 9 in this case, and since it's greater than 5, you add 1 to the fourth decimal place. So, 9.99999 rounded to 4 decimal places is 10.0000. Easy peasy, lemon squeezy!
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To round 34.4 to one decimal place, you look at the digit in the second decimal place, which is 4. Since 4 is less than 5, you simply drop all the digits after the first decimal place, resulting in 34.4 rounded to one decimal place.
To round 0.849 to one decimal place, you look at the digit in the second decimal place, which is 4 in this case. Since 4 is less than 5, you simply truncate all digits after the first decimal place, leaving you with 0.8 as the rounded value.
To round 7.7 to the nearest decimal place, you would look at the digit in the second decimal place, which is 7. Since this digit is 5 or greater, you would round up the digit in the first decimal place by adding 1. Therefore, 7.7 rounded to the nearest decimal place would be 7.8.
It is: 63.5
To round 147 to one decimal place, you look at the second decimal place, which is 4 in this case. Since 4 is less than 5, you keep the first decimal place the same. Therefore, rounding 147 to one decimal place gives you 147.0.