121 rounded to the nearest 10 is 120 .
121
120
100
120
To the nearest ten, 120 To the nearest hundred, 100
You round it down to 100, as the 2 for tens must be rounded down.
To the nearest percentage, it is 68%.
121
200
100.
0
231 ÷ 121 = 1 r 110 121 ÷ 110 = 1 r 10 110 ÷ 10 = 11 r 0 gcf of 121 and 231 is 11.