Standard Form by Boxed Rockets

Convert these numbers between standard form and normal numbers

2.76 \times 10^{3}

2760

8.12 \times 10^{3}

8120

7.37 \times 10^{- 3}

0.00737

2360

2.36 \times 10^{3}

69900

6.99 \times 10^{4}

0.000831

8.31 \times 10^{- 4}