0.000 000 000 001 of a second.
10-6 = (1/10)6 = 0.000 001
001 is just 1 .001 is 1/1000
It is: 1/1000 = .001 or 0.001
None because 001 is the same as 1
.001
If that's 0.001, it is 1/1000 as a fraction.
21.01 Think of the decimal as a fraction. The .01 could go up to .99 before it turns into a 1, so that is hundredths. Thousandths would be .001, because .001 would go up to .999 before it turns into a 1.
The 0005 is larger without a decimal points. If you meant .001 and .0005, the .001 is larger.
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