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The Chip Board

The Chip Board. This is a BLACK chip. It has a value of POSITIVE 1. The Chip Board. This is a RED chip. It has a value of NEGATIVE 1. This is a BLACK chip. It has a value of POSITIVE 1. The Chip Board. This is a RED chip. It has a value of NEGATIVE 1.

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The Chip Board

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  1. The Chip Board

  2. This is a BLACK chip. It has a value of POSITIVE 1. The Chip Board This is a REDchip. It has a value of NEGATIVE1.

  3. This is a BLACK chip. It has a value of POSITIVE 1. The Chip Board This is a REDchip. It has a value of NEGATIVE1.

  4. ZEROs are “free”. Any time you can make a zero, you can make it disappear without changing the value of your board. This is a ZERO. It consists of one BLACK chip and one RED chip. Any time you need chips, you may take as many zeroes as you would like. The Chip Board

  5. + -4 = +3 -1 The Chip Board -1 +3 + -4 =

  6. - -4 = +3 The Chip Board But we don’t have any red chips, so we need to get them. We can get 4 red chips by taking 4 zeroes. Subtract 4 red chips +3 - -4 =

  7. - -4 = +3 +7 The Chip Board +7 Now, we have 4 red chips, so we can take away 4 red chips. +3 - -4 =

  8. Try these on your board: +5 + -3 = -4 + -3 = -3 - +2 = -3 - -2 =

  9. Try these on your board: +2 -7 -5 -1 +5 + -3 = -4 + -3 = -3 - +2 = -3 - -2 =

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