Bułka z masłem inglês:

The exam was a piece of cake, I expected it to be a lot harder.

All the idioms are a piece of cake for those people with good memory.

This exercise was a piece of cake I need something more challaging.

Climbing that mountain was a piece of cake. No problem at all.

Don't worry about the exam. It'll be a piece of cake.

It's a piece of cake.

The exam was a piece of cake.

Learning English is a piece of cake!