Montanna needed to multiply 5 x 27.  If they remembered that 27 = 20 + 7, 5 x 20 = 100, 5 x 7 = 35 and they used those facts to solve the problem, what property(ies) of multiplication did they use?                             5 x 27 = 5 x (20 + 7) =  (5 x 20) + (5 x 7) = 100 + 35 = 135 (i)    commutative                      (ii)   associative           (iii)  distributive Choose one of the following answers below and show your work:   (i) only (ii) only (iii) only (i) and (ii) only

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A: He can estimate it by the following method, We can write, 13.8 as 138/10 and 1.42 as 142/100

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.