kilograms.
"Kilogram" is not a unit of weight. It's reasonable to expect that a cat might have a mass of four kilograms.
13 Grams divided by 1000 = 0.13 Kilograms So .013 Kilo grams is your answer! (:
If you've been specifically asked to, sure. But unless kilograms are really small, or the leaf is really big, grams or even micrograms, if possible, are best.
It natters what you're measuring, for you kilograms would be better, because 1 kilogram is about 2.2 pounds. A 175 pound man would weigh 79378.66 grams and 79.38 kg so obviously a gram is good for something with a small mass.
No, 2000 kilograms is an unrealistic estimate for a pumpkin. A more reasonable estimate would be around 5-10 kilograms for a large pumpkin.
A best estimate for the mass of a key is 26 grams.
kilograms
1 kg
You can just use a set of weigh scales.
The best estimate of the mass of a single peach would be 150 grams.
kilograms
The best estimate for a pair of sneakers is 1 kilogram.
kilometer
kilograms.
250 kilograms
You could, but it might be best to use Kilograms (1000's of grams)