True, 23 + 9 = 32, 41 + 9 = 50, 56 + 9 = 65, 68 + 9 = 77, 72 + 9 = 81, 85 + 9 = 94, 19 + 9 = 28, 34 + 9 = 43, False, 27 + 8 = 15, 43 + 8 = 53, 51 + 8 = 62, 64 + 8 = 62, 76 + 8 = 83, 88 + 8 = 86, 12 + 8 = 21.

Two-digit addition practice

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