Question 1

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waecmaths question: 

Multiply $2.7\times {{10}^{-4}}$ by $6.3\times {{10}^{6}}$ and leave your answer in standard form

Option A: 

1.7 × 103

Option B: 

1.70 × 103

Option C: 

1.701 × 103

Option D: 

17.01 × 103

waecmaths solution: 

$\begin{align}  & 2.7\times {{10}^{-4}}\times 6.3\times {{10}^{6}}=2.7\times 6.3\times {{10}^{-4+6}} \\ & =17.01\times {{10}^{2}} \\ & =1.701\times {{10}^{3}} \end{align}$

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