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Published byShona Douglas Modified over 9 years ago
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Calculate the Following (Group A): 1. 3 + 5 2. 3 – 5 3. 3 – (-5) 4. 3 + (-5) 5. 3 – (+5)
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Which ones have the same answer?
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Integer Tile Rules Write these rules (you have 2 minutes) A positive (+) and negative (-) placed together is a ZERO PAIR, which equals ZERO. – You can place as many zero pairs on your mat as necessary. In the middle – A positive (+) sign means to add tiles – A negative (-) sign means to remove tiles
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Now do these: Group B 1.-3 + 8 2.-3 – (-8) 3.-3 – (+8) 4.– 3 – (8) 5.– 3 + (-8) Group C 1.7 + 3 2.7 – 3 3.7 – (-3) 4.7 + (-3) 5.7 – (+3) Group D 1.6 + 2 2.6 – 2 3.6 – (-2) 4.6 + (-2) 5.6 – (+2)
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Integer Song for adding and subtracting: Row, Row, Row Your Boat Same signs add and keep Different signs subtract. Keep the sign of the larger number and then you’ll be exact
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What you should understand: There are many ways to write the same problem. You should be able to calculate integers ANY way they are written because you never know how you’ll see them on a test.
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Multiplying and Dividing Integers 1.12 X 4 2.– 12 X 4 3.– 12 X – 4 4.12 / 4 5.– 12 / 4 6.– 12 / - 4 What are the rules for multiplying and dividing integers?
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