Jambmaths question:
Evaluate $\frac{2.813\times {{10}^{-3}}\times 1.063}{5.637\times {{10}^{-2}}}$reducing each number to two significant figures and leaving your answer in two significant figures
Option A:
0.54
Option B:
0.0054
Option C:
0.055
Option D:
0.056
Jamb Maths Solution:
\[\begin{align} & \frac{2.813\times {{10}^{-3}}\times 1.063}{5.637\times {{10}^{-2}}} \\ & \approx \frac{2.8\times {{10}^{-3}}\times 1.1}{5.6\times {{10}^{-2}}}\text{ }\!\!\{\!\!\text{ reducing each number 2s}\text{.f }\!\!\}\!\!\text{ } \\ & =0.55\times {{10}^{-1}} \\ & =0.055 \end{align}\]
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