Assuming you mean five and three thousandths, the decimal would be 5.003. If you mean, fifty-three thousandths, the decimal would be .053.
You can write twenty-four thousandths as 0.024.
You would write eight thousandths as .008
72 thousandths = 0.072
31 thousandths is: 0.031
You write 54 thousandths in decimal form as: 0.054
I would write it as twenty-four thousandths.
312 thousandths = 0.312
Five thousandths = 0.005
Six thousandths.
2337 thousandths = 2.337
nineteen thousandths = 0.019
Three thousandths is 0.003.