In different branches of math. For example. in statistics you nee d to find the standard deviation and your calculated number is an irrational number, you need to round it off.
999 of them.
45 to 54
Infinitely many.
3 499
25549
Ten integers can be rounded off to 280. An infinite number of numbers can be rounded off to 280.
999 of them.
u just make the number shorter e.g. 1.7 is rounded off to 2
Since numbers equal to or greater than 5 are rounded up, and numbers equal to or less than 4 are rounded down, the largest 4-digit number that can be rounded off to 3000 would be 3004.
15 to 24
45 to 54
35 to 44
245 to 254
Infinitely many.
3 499
25549
The numbers from 75 to 84 are rounded off to 80 to the nearest ten