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2014-07-09T23:35:56-03:00
1kg ----- 1000 gramas
1,2 kg --- x
x = 1,2*1000
x = 1200 gramas
1,2 kg = 1200 gramas

1 grama ----- 1000 mg
1200 gramas ----- x mg
x = 1200*1000
x = 1200000 mg
1,2 kg = 1200000 mg
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