0.000 001
0.005
None because 001 is the same as 1
.001
The 0005 is larger without a decimal points. If you meant .001 and .0005, the .001 is larger.
1 Thousandth
0.001 is a fractional number in decimal form and there is no sensible way to convert it into a whole number.
Without a decimal point, they are both the same. If you asked "Which is less .01 or .001", then .001 is the smaller number.
.001
.001
one-thousandth as a decimal = 0.001
0.10 in decimal word form is one tenth.