Kilos.
The prefix "kilo" (symbol k) in the International System of Units (SI) and other systems, which denotes 103, it means one thousand. Therefore, there are 1,000 grams (g) in a kilogram (kg) and 0.001 kilogram equal a gram. Kilograms and grams are units of mass not volume such as liters, gallons, quarts, pints, and cups, and can only be conveted to each other if you have the specific item being measured, as each item has a different density.
300 kilograms
The 300 kilograms is equal to 300,000 grams.
300 grams is smaller.
Grams
It would actually weigh about 500 grams and it would not be very practical if your cereal box weighed more than you
There are 1000 grams in one kilogram. Therefore, 4 kilograms 300 grams is equal to 4 x 1000 + 300 = 4300 grams.
3000 kilograms = 3,000,000 grams (3 million grams) (1 kilogram = 1000 grams)
kilograms
That would be kilograms. The very smallest of horses, smaller than a dog, weigh only about 60 pounds (27 kg), and thoroughbreds average over 1000 pounds (450 kg). The largest horses can weigh over 3000 pounds (1360 kg).
A horse would weigh 600 kilograms.
17.3 kilograms = 17 300 grams
0.3 kg