Mathematical+Reflections,+p+66

 05/04/09 M.B Big Idea : Multiplying and Dividing Integers


 * Essential Question:** How do I multiply and divide integers?

notes from this class: no notes were taken.

1. Q: Write a strategy for multiplying two integers. Be sure to consider all possible combinations of positive integers, negative integers, and 0. Verify your strategy by finding the following Products.

A: When ever you times a negative with a positive the answer will always be a negative. When ever you times a negative with a negative your answer will always be a positive. When ever you times a positive with a positive your answer will always be a positive. When you times a negative/positive with a zero your answer will automatically become a zero. a. -13 times 7 = -91 b. 11 times - 20 = 220 c. -12 times 0 = 0     d. -18 times -22 = 396

2. Q: Write a strategy for dividing two integers. Be sure to consider all possible combinations of positive integers, negative integers, and 0. Verify your strategy by finding the following quotients.

A: When you divide a negative with a negative your answer will be a positive. When you divide a negative with a positive your answer will be a negative When you divide a positive with a positive your answer will be a positive. When you divide a positive with a negative your answer will be a negative. When you divide a positive/negative with a zero nothing will change.

a. 126 divide -9 = -14 b. -36 divide -12 = 3

c. -2592 divide 32 = -81 d. 0 divide 18 = 18