Rounding to the first digit is simply called rounding. This will make the number equal to the same as what the number truly is.
rounding means reducing the digits in a number while trying to keep its value similar.
No, it is a more precise procedure than that.
An estimate is an educated guess based on prior knowledge. Rounding off is knowing the exact value but rounding it to the nearest whole number.
Look at the place you are rounding off. Look at the number to the right of it. If the number to the right is 4 or less, the rounding value stays the same and every digit to the right of it goes to zero. If the number to the right is 5 or greater, the rounding value goes one higher and every digit to the right of it goes to zero.
When you're rounding, the place you're rounding to will either stay the same or go up by one. Everything to the right of that place will turn into zeros.
982,400 is 982404 rounded to the nearest rounding number.
No, it is not. Estimating may be rounding but need not be.
They are not.
steps rounding off number
can I keep my number