Kilograms, gram's would be to large of a number and you should always try to have the smallest number possible, that way when you hare your numbers with other people this makes it easier for people to remember the numbers, because they don't have this extremely large number for them to remember. Now depending on who your sharing your information with, I suggest that if your sharing with people that are not scientist or people that send their information outside of the country, use your native conversion's. (For example: In the U.S.A use pounds not kilograms that's not what we use.)
Kilograms because 1 kilogram is 1,000 grams and trucks are very heavy.
You would weigh a baseball bat in kilograms.
10 kilograms
It would actually weigh about 500 grams and it would not be very practical if your cereal box weighed more than you
Grams and kilograms are measurement of weight. For a letter you would use grams. For a package you would use kilograms as it weight is more.
Kilograms because 1 kilogram is 1,000 grams and trucks are very heavy.
You would weigh a baseball bat in kilograms.
I think it is kilograms
A glass would typically weigh around 75 grams, not 75 kilograms.
10 kilograms
It would actually weigh about 500 grams and it would not be very practical if your cereal box weighed more than you
You could (theoretically) use either... However - Kilos is the preferred measurement.
A can of soup would weigh 300 grams. 300 kilograms would be a much larger weight than a typical can of soup.
An apple would typically weigh around 200 grams, not 200 kilograms. 200 grams is equal to 0.2 kilograms.
kilograms because kilo means 1000
You would typically weigh a laptop in kilograms, as laptops are typically heavier than what is commonly measured in grams.
kilometer