how can you express 3,212 in scientific notation with the lowest level of precision?

3 times 10^3
3.2 times 10^3
3.21 times 10^3
3.212 times 10^3

3.21 times 10^3

To express 3,212 in scientific notation with the lowest level of precision, you would write it as 3.2 times 10^3.