Correct: 2 + 2 = 4, 10 - 9 = 1, 5 - 3 = 2, 10 + 4 = 14, 50 - 22 = 28, 19 - 11 = 8, 8 + 13 = 21, 4 + 7 = 11, 12 - 6 = 6, 8 + 35 = 43, 18 + 18 = 36, 90 - 45 = 45, 100 + 23 = 123, 342 - 42 = 300, 39 + 6 = 45, Incorrect: 2 + 2 = 5, 10 - 9 = 2, 5 - 3 = 8, 10 + 4 = 6, 5 - 3 = 1, 20 + 20 = 22, 4 + 7 = 10, 8 + 13 = 20, 6 - 6 = 1, 100 + 23 = 10023, 90 - 9 = 0, 37 + 3 = 373, 45 + 45 = 80, 56 - 32 = 36, 97 + 15 = 110,

Adding and Subtracting Whole Numbers

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