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
Ah, what a happy little number we have here! When we round 3.578 to the nearest unit, it becomes 4. Just a gentle adjustment to help our number find its place in the world. Remember, there are no mistakes in rounding, just happy little approximations.
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
40 litres!