With a scale. Mass equals weight.
Strawberries would be measured in grams or ounces.
The official SI unit for mass is the kilogram. Smaller and larger units are used, such as the ton (= 1000 kilogram), the gram (= 1/1000 kilogram), the milligram (= 1/1000 gram = 1/1,000,000 kilogram), the microgram, etc.
in grams
You would typically use grams to measure money, as the amounts are small and precise. A milligram is too small for practical use, and a kilogram is too large for measuring money amounts.
Length: meter Mass: kilogram Volume: cubic meter
Neither of those units will produce a very convenient number. But of the two, the kilogram is the better choice.
I will measure a book with grams
no
You would weigh an apple in grams, not kilograms.
you would use a kilogram
A kilogram is a measure of mass therefore a kilogram of lead and a kilogram of feathers have the same mass: one kilogram. They would, however, have different volumes and densities.
Potatoes are sold by the kilogram.
Grams
it would be a gram and if you didn't know a kilogram is equal to 1,000 grams
Kilogram is a measure of weight - so you would use it to weight something. You would probably use it for objects that are large enough to make using grams unnecessary.
You would typically measure a bag of flour in kilograms because it is a larger unit of measurement compared to grams, which are better suited for smaller quantities.
Strawberries would be measured in grams or ounces.