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Adding negative
This uses a bit of zero pare 5+(-3) get 5 green counters and 2 red counters using zero pare and whatever if left over is the answer and answer is 2
We can only use this method if we have 2 negative (-3)+(-12) we can rewrite this as -3-12 and the the answer is 15
Rules
+positive you move right, + negative you move right
Subtracting negative
(-8)-(-3)= get 8 red ready then you cross off 3 off then whatever you are left with that is the answer in this case it is -5
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Rules
- positive you move left - negative you move right
Multiplying negative
Rules
Positive x positive =positive, negative x positive =negative, positive x negative = negative, negative x negative = positive
(-9)x(-7) =?
You would do 9x7 and that is 63 but we don’t add a - sin at the end because we know that a negative x a negative = positive so the answer is 63
Dividing negative
Rules
Positives divided positive =positive, positive divided negative = negative, negative divided positive = negative, negative divided negative = positive
(-8) divided 4 =
You do 8 divided 4 which = 2 and since we know negative divided positive = negative we have to turn the 2 into a negative and the answer is -2
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