1. 6 millisecondes = _______ microsecondes   2. 3 kilowatts = _______ watts   3. 7 grammes = _______ milligrammes   4. 4 mégawatts = _______ kilowatts   5. 8 kilogrammes = _______ grammes   6. 64 mégabytes = _______ kilobytes   7. 7 microsecondes = _______ nanosecondes