17.2
62.2
Rounded to 1dp = 58.7 rounded to 2dp = 58.69 one whole number = 59
13.2 percent (rounded to 1dp).
It is 113.1!!!
There is no sensible meaning to "31 round to 1 dp" because the number is already rounded to a greater degree than that!
9.4
326.6
It is: 21.2
14.0
8.8
It depends what number you're rounding to. (dp=decimal place) 0.7234 (4dp) 0.723 (3dp) 0.72 (2dp) 0.7 (1dp) 1 (1sf (significant figure))