3rd grade

WHAT ARE PARTIAL SUMS???

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asked by KATELYN
  1. It is a method of addition, without regrouping (carrying).

    for instance

    459
    164 add
    add the 400 and 100 hundreds
    500
    add the 50+ 60
    110
    add the 9+4
    13
    now add those
    (right to left)
    643
    http://www.nychold.com/em-arith.html

  2. grade 1 215
    grade 2 186
    grade 3 259
    how many more were sold bt grade 3 than by grade 2? 73 answer

    why aren't any of the tens regrouped to subtract the ones?

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    posted by jordan

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