Note: The only significant figures in a logarithm are those after the decimal piont. The integer part just gives the power of 10. In the following there are 3 significant figures in (a), (b), (c) and (e); (d) has 2 sig. fig. This must be preserved in the answer.

2. Using your calculator:
(a) antilog (0.724) = 5.30
(b) antilog (1.724) = 53.0
(c) antilog (-0.689) = 0.205
(d) antilog (-6.89) = 1.3X10-7
(e) antilog (-0.0100) = 0.977

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