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Math (kindergarten)

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Break apart the addends. Solve for the total sum.
18
+ 21
--------

  • Math (kindergarten)??? - ,

    10 + 8 + 20 + 1 =

    or

    20 - 2 + 20 + 1

  • Math (kindergarten) - ,

    39

  • Math (kindergarten) - ,

    start on the right. 8+1=9 move to the left side. 1+2= 3. the solution to this problem is 39

  • Math (kindergarten) - ,

    go to the right.8+1=9
    go to the left.1+2=3
    it is 39.

  • Math (kindergarten) - ,

    10+8+20+1= 39

  • Math (kindergarten) - ,

    39

  • Math (kindergarten) - ,

    18 + 21 = 39

    Answer:

    39

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