To the nearest tens it is 20
20
18
0
The square root of 18, rounded to the nearest integer, is 4.
18
17.462 rounded to the nearest whole number = 18
18 / 66 = 0.27272727... rounded to 0.273 -> 27.3% Check: 66 x 0.273 = 18.018 rounded to 18
18
18
18
18
It is: 18 rounded