Compare metric units of mass Quiz Welcome to your Compare metric units of mass QuizPlease enter your email and click "Next" Email Which one is heavier250 grams or 3 kilograms3 kilograms250 gramsthey are equalWhich one is greater5 tonnes or 5000 kilograms5 tonnes5000 kilogramsthey are equalWhich one is heavier456 milligrams or 4.56 grams456 milligrams4.56 gramsthey are equalWhich one is lighter0.7 kilograms or 65 grams0.7 kilograms65 gramsthey are equalWhich one is heavier0.5 grams or 500 milligrams?o.5 grams500 milligramsthey are equalTime is Up!