The sum total of its sides.
To round a number to a particular digit, look at the digit immediately to the right of your target, in this case, the tenths place. If that digit is 4 or lower, zero it and everything to the right of it out. If that digit is 5 or higher, increase the target digit by one and zero everything to the right of it out. If your target digit is a 9, increasing it will turn it to zero and increase the digit to the left of it by one.
6,453,321.9648 rounded to the nearest unit or whole number is 6,453,322
4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.
29.1 is approximate to0 to the nearest hundred30 to the nearest ten29 to the nearest whole number/unit
46.4 is approximate to0 to the nearest hundred50 to the nearest ten46 to the nearest whole number/unit
78.1 rounds to:100 to the nearest hundred80 to the nearest ten78 to the nearest whole number/unit
62.83 rounded to the nearest whole unit = 63
226.08 round to the nearest whole unit is 226
6,453,321.9648 rounded to the nearest unit or whole number is 6,453,322
3
4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.4 is an integer and so already rounded to a whole unit so to round to the nearest tenth you do nothing.
15.5 is approximate to0 to the nearest hundred20 to the nearest ten16 to the nearest whole number/unit
79.9 is approximate to:100 to the nearest hundred80 to the nearest ten80 to the nearest whole number/unit
29.1 is approximate to0 to the nearest hundred30 to the nearest ten29 to the nearest whole number/unit
46.4 is approximate to0 to the nearest hundred50 to the nearest ten46 to the nearest whole number/unit
78.1 rounds to:100 to the nearest hundred80 to the nearest ten78 to the nearest whole number/unit
To convert 40.3 liters to the nearest whole unit, we look at the decimal portion (0.3). Since 0.3 is greater than or equal to 0.5, we round up to the next whole unit. Therefore, 40.3 liters rounded to the nearest whole unit is 41 liters.
365.3 rounds to:0 to the nearest thousand400 to the nearest hundred370 to the nearest ten365 to the nearest whole number/unit