The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1".
The first figure to be discarded is 5 and following the above rule :
0.115 becomes 0.12 when rounded off the 2sf
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337 to the nearest hundreds is 300
368 to the nearest hundreds is 400
131 to the nearest hundreds = 100
945 to the nearest hundreds = 900
93,146 to the nearest hundreds = 93,100