The answer depends on the units used for 91.
It rounds to 91
In this case, you would round DOWN to 91.
100
90.
The answer depends on the units used for 91.
It rounds to 91
9 is the tens digit; 1 is less than 5 so round down. 91 rounded to the nearest ten is 90.
321.98%
In this case, you would round DOWN to 91.
4100 because 91 is greater than 50
90
100
90.
To round any number, look at the digit to the right of the place you are rounding to. If the digit is 5 or more, change the digit in the place you are rounding to to the next higher digit. If the digit to the right of the place you are rounding to is less than 5, leave the digit in the place you are rounding to as it is. Change all digits to the right of the place you rounded to to zeros. 91 rounded to the nearest hundred is 100.
12 x 91 = 1092
12 divided 91 = 0.13186813186813187