INTEGERS.FDECIMALS.F DIGITS WHICH ARE RELEVANT IN AN INTEGER OR A DECIMAL NUMBER 2 4 3* 2* *  Special case

NOW…TRY THIS! => => => => 0.02 => => => 2500 => or 3 or 4 Depend on the question

Round off to 1, 2 and 3 s.f – 1 s.f – 2 s.f – 3 s.f

NUMBERS1 S.F2 S.F3 S.F

 2.61 (1 S.F)  (2 S.F)  5217 (2 S.F)  5217 (3 S.F)  (2 S.F)  (2 S.F)  (3 S.F) NOW…TRY THIS!