We measure the weight of light things in grams (g). We measure the weight
of heavier things in kilograms (kg). 1 kilogram = 1000 grams. We can use
electronic or balance scales to measure the weight of something. We use
words like heavier and lighter to describe weight.
This pencil weighs 8 grams and is lighter than the dog.
This dog weighs 8 kilograms and is heavier than the pencil.
This apple weighs about 100 grams. The apple is lighter than the rabbit.
This rabbit weighs about 2 kilograms. The rabbit is heavier than the apple.
This rabbit weighs about 2 kilograms. Tom says we can also say the rabbit weighs about 2000 grams.
Is he correct?
Well, 1 kg is equal to 1000 grams.
2 x 1000 = 2000 grams, so Tom is correct.