K.4 Understanding Addition and Subtraction

Unit Goals

  • Students relate counting to addition and solve addition and subtraction story problems within 10.

Section A Goals

  • Understand addition as putting together and subtraction as taking from.

Section B Goals

  • Represent and solve Add To, Result Unknown and Take From, Result Unknown story problems within 10.

Section C Goals

  • Find the value of addition and subtraction expressions within 10.
  • Relate addition and subtraction expressions to story problems.
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Glossary Entries

  • above
  • add

    4 + 3

    Four plus three

  • below
  • beside
  • circle
  • expression

    6 + 4


    3 - 3

  • fewer
  • less

    3 is less than 9

  • longer

    The straw on the top is longer than the straw on the bottom.

  • more
  • next to
  • number writing reference

    1

    one

    2

    two

    3

    three

    4

    four

    5

    five

    6

    six
    Five-frame, full. Below, 1 dot.

    7

    seven

    8

    eight

    9

    nine

    10

    ten

  • rectangle

  • shorter

    The straw on the bottom is shorter than the straw on the top.

  • subtract

    5 - 2

    Five minus two

  • triangle