以上・以下・以外

About

以上いじょう combines with nouns that are counters/numbers/amounts and means "more than". 以上いじょう can also be used as "the end" or "that's all".

E.g. りんごが二ふたつ以上いじょうあれば大丈夫だいじょうぶ。 "It's okay as long as there are more than two apples."

E.g. 以上いじょうです！ "That's all"

以下いか combines with nouns that are counters/numbers/amounts and means "less than". 以下いか can also be used as "the following", usually on documents.

E.g. 0度ど以下いかは無理むりです。 "I can't handle temperatures below zero degrees."

以外いがい combines with a noun or verb and means "other than".

E.g. お茶ちゃは抹茶まっちゃ以外いがい、全部ぜんぶ好すきです。 "As for tea, I like anything other than matcha."

Summary

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  以上いじょう means "more than" or "the end/that's all"

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  以下いか means "less than" or "the following"

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  以外いがい means "other than"