質問: how do you say this in english (us)? 100グラムはどれぐらいの量ですか? how do you say this in english (us)? 100グラムはどれぐらいの量ですか?
回答: ・how much is 100 grams?(少し多義性ありだが、文脈によってはちゃんと通じます) ・how much [物質] is 100 grams? e.g. how much cereal, how much powder, how much cotton, etc. ・how much of this is 100 grams?