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Introduction to integer subtraction

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  1. What subtraction statement does each of the following diagrams represent?
    +1:Introduction to integer subtraction
    -1: Introduction to integer subtraction

    1. Model integer subtraction with integer chips

    2. Show integer subtraction as a set of integer chips

    3. Writing subtraction statement for integer subtraction represented by integer chips

    4. Introduction to integer subtraction
  2. Find the two differences between each pair of integers.
    1. +2, + 9
    2. +1, -5
    3. -3, -7
  3. Use integer subtraction to find the difference for the following situations.
    1. Bob had 10 chocolate bars and he ate 3 of them.
    2. Jamie earned $20 yesterday and $18 today. How much more money did he earn yesterday than today?
    3. Tom borrowed $8 from John last week. This week Tom gave John $5 back. How much did Tom still owe?
  4. Find the missing values.
    1. (+8) – (__) = +5
    2. (__) – (+6) = – 2
    3. (– 5) – (__) = – 1
    4. (__) – (– 8) = +6
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