Standard Form by Boxed Rockets

Are These Numbers in Standard Form?

6.4 \times 10^{3}

Yes

4.25 \times 10^{5}

Yes

3.54 \times 10^{-3}

Yes

4.52 \times 10^{5}

Yes

9.3 \times 10^{4}

Yes

0.651 \times 10^{-3}

No