60
It depends on rounded up to what degree. Rounded up to the nearest ten, it is 0.
You do nothing. 450 is already rounded to the nearest ten.
121195999979 = 121195999980 (rounded to the nearest ten) 100000000000 (rounded to the nearest hundred billion)
It is 3000 rounded UP to the nearest thousand. It is 2600 rounded down to the nearest hundred. It is 2650 rounded UP to the nearest ten.
600
To the nearest ten, 20
To the nearest ten, 20
To the nearest ten, 10
It is: 3240
Rounding 7381 to the nearest ten would result in 7380. When rounding to the nearest ten, you look at the digit in the ones place, which is 1 in this case. Since 1 is less than 5, you keep the tens digit the same and change all digits to the right to zero.
115 rounded to the nearest ten is 120