It's a piece of cake.
[Slang] IT'S A PIECE OF CAKE. - Learn to Speak About Easy Tasks in English!
Very easy.
It's a piece of cake" is a popular way to say that something is very easy to do. This idiom is used to suggest that a task or job can be completed with minimal effort.
Example Sentences
Don't worry about the exam, it's a piece of cake.
Don't worry about the exam; it's very easy.
You'll find the job easy, it's a piece of cake.
You'll find the job to be very simple.
Setting up the computer was surprisingly easy, it's a piece of cake, really!
Setting up the computer was surprisingly effortless.