5x10^2 written in standard form.
4.4x10^-5 written in standard form.
2.1x10^3 written in standard form.
1.66x10^9 written in standard form.
3.85^-8 written in standard form.
9.725x10^6 written in standard form.
500
0.000044
2100
1660000000
3.85 × 10^−8
9725000