"As easy as falling off a log" is one such expression.

VOA: special.2009.06.07

You feel mighty free and easy and comfortable on a raft...

VOA: special.2010.03.21

In fact,it would be as easy as "falling off a log".

VOA: special.2009.06.07

Another expression is "as easy as shooting fish in a barrel."

VOA: special.2009.06.07

The U.S.-sponsored Security Council resolution, expected to win easy approval next week, will create a special representative to the U.N.

VOA: standard.2009.09.25

Scott LaGanga,director of PhRMA, a leading pharmaceutical research and manufacturing company, says it's easy and profitable to sell look-alike,low quality drugs.

VOA: standard.2010.06.07

The chairs tilt back so that it is easy to look up and watch a movie projected on the ceiling.

VOA: special.2009.03.11

They found it easy to settle in a country that, until seventeen seventy-six, was a collection of British colonies.

VOA: special.2010.05.20

In nineteen seventy, James Conaway wrote a crime novel called The Big Easy. The story was set in New Orleans.

VOA: special.2010.03.14

A wife might urge her husband to "go easy on" their son, because the boy did not mean to wreck the car.

VOA: special.2009.06.07

Also,business plans often assume it will be easy to gain a share of a large or fast-growing market.

VOA: special.2009.06.26

"They want to think that they can come to America and have a great job, so it's very easy to fool them."

VOA: special.2010.06.14

If it is necessary to borrow some money to fix the car, you should look for a friend who is an "easy touch".

VOA: special.2009.06.07

So it's a different class of resource not as easy to develop, and not even recognized as something worth pursuing, say,twenty years ago."

VOA: special.2009.10.23