Because 450 is nearer to zero than it is to 1,000.
You do nothing. 450 is already rounded to the nearest ten.
450
550
When rounding a number, you look at the digit to the right of the place value you are rounding to. In this case, 450 is being rounded to the nearest ten. The digit in the tens place is 5, which is greater than 4, so you would round up. Therefore, 450 rounded to the nearest ten is 450.
Because 450 is nearer to zero than it is to 1,000.
What is the nearest 100 of 450
450
As is. It is already rounded to the nearest tens place.
450
450
450.0
45/100 of 1000 = 1000*45/100 = 450
4000
You do nothing. 450 is already rounded to the nearest ten.
450
450