Bonjour,
a. 250 g = 0,25 kg
0,25/1 kg = (0,25 x 100) / (1 x 100) = 25/100 kg = (25 x 1) / (25 x 4) = 1/4 kg
b. 20 dg = 2 g = 0,002 kg
0,002/1 kg = (0,002 x 1 000) / (1 x 1 000) = 2/1 000 kg = (2 x 1) / (2 x 500) = 1/500 kg
c. 1 mg = 0,000 001 kg
0,000 001/1 kg = (0,000 001 x 1 000 000) / (1 x 1 000 000) = 1/1 000 000 kg
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Bonjour,
a. 250 g = 0,25 kg
0,25/1 kg = (0,25 x 100) / (1 x 100) = 25/100 kg = (25 x 1) / (25 x 4) = 1/4 kg
b. 20 dg = 2 g = 0,002 kg
0,002/1 kg = (0,002 x 1 000) / (1 x 1 000) = 2/1 000 kg = (2 x 1) / (2 x 500) = 1/500 kg
c. 1 mg = 0,000 001 kg
0,000 001/1 kg = (0,000 001 x 1 000 000) / (1 x 1 000 000) = 1/1 000 000 kg