MATH 212 Study Guide - Midterm Guide: Distributive Property, Multiplication Algorithm, Scientific Notation
Document Summary
Use the meaning of multiplication and a diagram to illustrate 2 x 5 = 5 x 2. Give one diagram that can be seen both ways. b. Use the meaning of multiplication and a diagram to illustrate. Give one diagram that can be seen both ways. 2(6). a. mary calculates 25 x 12 by noticing that 12 = 4 x 3 and then thinking as follows: 25 x 4 = 100, and 100 x 3 = 300, so the answer is 300. Mary using? b. jerry finds 40 x 19 by finding 40 x 20 and then subtracting 40. He gives an equal share to himself and to each of his three roommates. Then he gives half of his share to his girlfriend. Explain how your diagram illustrates the multiplication used to find the answer. Pam has two purses, two hats, and three pairs of shoes that match her outfit.