Turn-around rule. A rule for solving addition problems based on a property of addition. If you know that 6 + 8 = 14, then, by the turn-around rule, you also know that 8 + 6 = 14.Click to see full answer. Similarly, what is the turn around rule for multiplication?For multiplication, it states that if a * b = c, then b * a = c. We use the commutative property and turnaround facts only in addition and multiplication. They do not work with other operations such as division and subtraction.Subsequently, question is, does division have a turnaround rule? Turnaround facts and the commutative property apply only to addition and multiplication. They do not work with subtraction or with division. One may also ask, does the turn around rule work for subtraction? We decided the turn-around rule does NOT work for subtraction because changing the order of the numbers produces different results. Creating number stories, writing number models for number stories, and using the turn-around rule appropriately will all be revisited throughout the year.What is a number model?A number model is a sentence that shows how a series of numbers are related. An example of a basic number model could be 12+3=15. A number model is an equation that incorporates addition, subtraction, multiplication and division, which are used singularly or together.