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数字に5を足す
Add 5 to the number
To add a quantity to another quantity, typically in a mathematical or practical context.
このリストに名前を足す
Add a name to this list
料金に消費税を足す
Add consumption tax to the price
Can be used in both literal and figurative contexts, such as adding people to a group or including additional information.
足す is commonly used in both spoken and written Japanese for adding quantities, items, or people to something.
In mathematical contexts, 足す is often used to describe addition, but it can also be used in more general contexts.
From the verb '足す' (tasu), derived from the noun '足' (ashi, meaning 'foot'), originally referring to adding something to a base or foundation.
Often used in everyday contexts, such as adding ingredients to a recipe or adding people to a group. Can also be used in financial contexts to refer to adding amounts.