Answer:
1. 2 kg = 2,000 grams, 5 kg = 5,000 grams, 8 kg = 8,000 grams, 10 kg = 10,000 grams.
2. 3 grams = 3,000 milligrams, 4 grams = 4,000 milligrams, 6 grams = 6,000 milligrams, 9 grams = 9,000 milligrams.
3. feather = milligram, cheese = gram, cement = kilogram.
4. 2,000 grams.
5. A = no , B = yes , C = yes, D = yes