If the last number is 5 or larger than 5, then you round up, but if it less than 5, than you round down.
[tex]Ex: 42.591[/tex], round to nearest hundredth:
Because 1 is less than 5, then we keep the 9 there so the answer is [tex]42.59[/tex]
[tex]Ex: 31.5727[/tex], round the number to the nearest thousand:
Because 7 is greater than 5, then we round the 2 to 3 so the answer will be [tex]31.573[/tex].
Hoped i helped:)
