The standard form of 0.237 is _____.

The standard form of a number is a way to express it using the format "a x 10^b " where $1\le a<10$ and b is an integer. This is also known as scientific notation. 

In this case, to express 0.237 in standard form, we want to move the decimal point one place to the left to get 2.37, which is between 1 and 10, and the exponent will be -1 (indicating that we moved the decimal point one time to the left).

Therefore, 0.237 = 2.37x 10^-1.