i THINK 27
It has been amended only once!
The verb phrase is - has been amended.
The U. S. Constitution has been amended twenty seven times.The Constitution, has been amended 17 times since the first 10.
The state of Ohio's constitution has been amended approximately three times. It was amended in 1802, 1851, and again in 1912.
439 times
43 times
-7 billion times
The preamble to the US Constitution has never been amended.
According to http://www.claremont.org/projects/pageid.1793/default.asp"... the California Constitution...has been amended about 500 times by referendum and about 40 times by initiatives since its adoption in 1879. "
The preamble has been amended three times.
== == 94 (ninety-four) times.
twenty seven