Subtracting Integers. Integers +1 Integers Positive and negative numbers cancel each other. +1+ (-1) = 00.

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Presentation transcript:

Subtracting Integers

Integers +1

Integers Positive and negative numbers cancel each other. +1+ (-1) = 00

Integers What number do I have on the screen now? 00 Went dancing Went out to dinner Went to the movies Went to the beach Went hiking

Integers SUBTRACT!!!! +2 (-4) = +6+6 I need to take away 4 negative counters, but I do not have any negative counters!!! How can I take away something I do not have?!?!

Integers SUBTRACT!!!! (-3) =

Integers SUBTRACT!!!! (-2) =

Integers Please use your counters! (+2) =

Integers Please use your counters! (+3) =

Integers Please use your counters (-5) =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer (+6) = or =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer. -5 – (-6) = +1+1

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer = -5-5

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer. -3 – (-2) =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer (+10) =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer (-10) = +6+6

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer (-3) =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer. 10 – (+3) = +7+7

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer. +4 – (-6) =

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer. +4 – (+6) = -2-2

Integers And now try it yourself. When you see the number sentence, please arrange the counters on your desk, raise your hand and be ready to answer (-5) =

And now… let’s practice on the paper Use your counters!

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