3kg rock = 3000 g rock; so it is heavier because it weighs more. hoping kids use this!
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In the metric system 100 g = 1 kg. 1000 kg = 1 tonne. So both kg and tonne are heavier than a g ) gram).
A kilogram is heavier. Kilo means 1000, so a kilogram is a 1000 grams. The prefix kilo~ denotes 1,000.
A kilogram is heavier.
1 mg = 0.001 g 1 kg = 1000 g → 1 kg ÷ 1 mg = 1000g ÷ 0.001g = 1,000,000 → 1 kg is a million times heavier than 1 mg 1 kg = 1000 g → 1 kg ÷ 1g = 1,000 g ÷ 1 g = 1,000 → 1 kg is a thousand times heaver than 1 g
1.000000001 kg is heavier