Meanings
Attested since 1936, originally in American English.[1] Possibly from cakewalk, or the notion of facility that derives from many cakes having agreeable tastes, and hence being ‘easy’ to consume.
How to pronounce "piece of cake":
US
AU
Used other than figuratively or idiomatically: see piece, cake.
A job, task or other activity that is pleasant – or, by extension, easy or simple.
Example: "Sure, no problem. It'll be a piece of cake."
Example Sentences
1
Baking a cake from scratch is a piece of cake for me.
2
I thought the exam would be difficult, but it was a piece of cake.
3
Running a marathon was a piece of cake for him; he finished it in record time.
4
As an experienced programmer, writing this code was a piece of cake.
5
Don't worry about fixing the car engine, it's a piece of cake.