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QR Challenge: Adding & Subtracting Two-Digit Numbers

QuestionAnswer
37 + 15 = 52
49 - 24 = 25
72 + 19 = 91
85 - 36 = 49
34 + 88 = 122
44 - 17 = 27
74 + 92 = 166
52 - 39 = 13
68 - 46 = 22
70 - 37 = 33
81 - 67 = 14
78 + 59 = 137
80 - 24 = 56
96 - 69 = 27
152 - 39 = 113
284 - 168 = 116
189 + 47 = 236
546 + 194 = 740

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