1) 41 + 27 = 2) 33 + 42 = 3) 56 + 23 = 4) 87 + 12 = 5) 28 + 20 = 6) 89 - 24 = 7) 76 - 24 = 8) 55 - 34 =  9) 96 - 65 = 10) 72 - 31 =

add and subtract any pair of 2 digit numbers without bridging (partitioning)

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