#925-Associative Property Price $4.50 Qty: Any way you group them, they still add up. "As long as we stay in the same order, we can associate with whomever we please." For any numbers a, b, and c: (a+b) + c = a + (b+c) and (a x b) x c = a x (b x c ).  See also posters 732 and 733.