chapter 1 : standard form

1) Round off the following numbers according to the significant figures stated in the bracket.
a) 0.004768 [3]                                 g) 0.004508 [3]
b) 0.0476 [6]                                     h) 600.2 [1]
c) 0.98457 [3]                                    i) 0.00307 [2]
d) 0.0078479 [4]                                j) 0.004195 [3]
e) 0.1080 [2]                                      k) 27.83 [2]
f) 0.010083 [4]                                   l) 104.025 [3]