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Take out homework and a pencil to prepare for the homework quiz! Check the file folder for your class to pick up graded work ◦ Located by the bookshelf, blue crate. ◦ Look behind the tab for your class period and take home anything with your name on it. Turn to page 110 in your textbook. Perform the In-Class Experiment with members at your table. Check your answers: 1. G 2. A 3. B 4. E 5. C 6. D 7. H 8. I 9. F Refer to the Handout on the properties of arithmetic. You need to know the significance of these rules. It’s not imperative that you memorize the names of the properties—for this course anyway. On page 112, complete problems 1 and 2 independently, and then check your work/answers with others at your table when you are finished. Check your answers (note that each person may have different variables in each example): 1. a. a 1 a b b b. c – d = c + (–d) c. ab = (–a) (–b) 1 1 a and b d. If ab = 1, then b a 2. a. If “a = 0” is true, then “a = 0 or b = 0” is true. b. Every nonzero number has a reciprocal. c. The left side becomes b and the right side becomes 0. d. It shows that either a or b has to be 0. If a 0, then b = 0.