You have a habit of buying coffee at a café every morning. You mention this habit to your brother. He points out that it's expensive to buy coffee at a café instead of making it at home. You agree.
Yeah, it adds up.
"Yeah" means "yes" but is better for most conversational situations. It sounds more friendly than "yes". You can use it when speaking with friends or at work, but it's not common in writing.
Use the phrase "it adds up" to talk about something that eventually costs a lot of money because you have to pay again and again.
Here are some examples of expenses that you can say "add up":
- cable subscriptions
- fees that your bank charges
English speakers usually say "it adds up" to complain about the high price of something. But you can also use this expression to talk about making money.
I tutor kids in math on the side. It's not a lot of money, but it adds up over time.
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