Idiom · B1 · Informal · Work and study
a piece of cake
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Meaning
Something that is very easy to do.
Examples
- The exam was a piece of cake. I finished in twenty minutes.
- Don’t worry about the interview. With your experience, it will be a piece of cake.
- Changing a tyre is a piece of cake once somebody shows you how.
How to use it
Informal. Use it when you talk to friends or classmates, not in a formal report. You can say “It was a piece of cake” or “It’s a piece of cake”.
Common mistake
Not: This task is a cake piece.
Say: This task is a piece of cake. (The words always stay in this order.)
Last updated 18 October 2026