39
1cm
There are one thousand thousands in one million.
38
Since there are infinitely many numbers you will need infinitely many blocks.
4/1mm - only decimals can be translated as non-top heavy fractions, if you were asking what 0.4cm is as a fraction it is 4/10 cm or 2/5 cm.
1000
1mm=how many SWG
0.001m = 1mm
1mm is 1000 microns
1mm
1mm = 0.000001km
1mm is 1,000,000 nanometers.
10
0.001 m = 1mm.
1mm 1mm
Define the measurement
1cm=10mm, so 1mm=1/10cm This means 1mm = 0.1cm