how many kilograms are in one teragram

Answer 1

1 kg = 1000 g
1,000 kg = 1,000,000 g or 1 million g
1,000,000kg=1,000,000,000 or 1 billion g
1,000,000,000kg =1,000,000,000,000 or 1 trillion g which is a tera g = 10^12 g

or just say at the start that a trillion grams is a billion kilograms