Multiplication and Division of Integers Cornell Notes Notes9/11/06 Origin The point on the line labeled zero Summary or questions objective I will add.

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Presentation transcript:

Multiplication and Division of Integers

Cornell Notes Notes9/11/06 Origin The point on the line labeled zero Summary or questions objective I will add integers…

Share out… If your partner had an idea about multiplying or dividing with negative numbers, please share their thought. Hey- your idea was great!

Here’s a way I can Remember! / To remember whether your answer will be positive or negative when MULTIPLYING or DIVIDING, we’ll use: Mr. Multiplivision

When multiplying Integers, cover the Two signs you are using Ex.: 5 (-3) What sign is left uncovered? Negative, - That is the sign of The answer = -15 Choral Response

Practice … under time! (-10)(3) = 21  -5 = -13  -6 = (raffle tickets…)

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Division Good News: It’s not any different! Ex.: -48  (-4) = + 12

Let’s try two more together:

Copy exactly what boss says Tell the “secretary” what to write in solving “Boss” and “Secretary” Person B: Boss first Partner A: Secretary first Then switch! / SOLVE: / 28  (-2)

Grade your boss’ work… / 28  (-2) / First, divide 28 by 2 / Then, cover a – and the + / 28  (-2) / First, divide 28 by 2 / Then, cover a – and the + The Answer is: 14

-54   -6 = 6 = 42 = -45

Your turn!! Good Luck!