Yes, Binary messages always involves two objects, so in your example there's two message sends. Be aware also that there's no arithmetic specific precedence rules �( 4 �* 5 + 2 �will return 22). The precedence is consistent among the whole language (unary->binary->keyworded).

On Wed, Jan 25, 2012 at 7:55 PM, Garret Raziel <boloomka@gmail.com> wrote:
So, keyword messages are slightly different from binary messages, because 5+4*3 doesn't invoke "+*" message so I don't have to write "(5+4)*3". If I had SmallInteger>>#multiplyBy and SmallInteger>>#add, I should use parenthesis "(5 add: 3) multiplyBy: 3".