280以内加减法，链接后加“?x=300”可调整加大计算数值，最大300。点此切换答案显示，方便截图打印。
注：改变浏览窗口大小，可调整每行题数，本页默认会显示100道，刷新页面随机重排。黑海豚设计（交流QQ:6932391)
169 - 70 = 99
39 + 114 = 153
233 - 181 = 52
155 + 64 = 219
20 + 33 = 53
161 + 83 = 244
56 + 53 = 109
76 - 17 = 59
188 + 25 = 213
153 + 15 = 168
228 - 124 = 104
135 - 132 = 3
15 + 80 = 95
98 + 137 = 235
55 + 35 = 90
75 + 165 = 240
180 - 64 = 116
127 + 142 = 269
233 - 158 = 75
61 + 190 = 251
113 + 16 = 129
65 + 186 = 251
65 + 11 = 76
224 - 177 = 47
92 + 184 = 276
203 + 4 = 207
21 + 44 = 65
175 + 65 = 240
110 + 104 = 214
174 - 4 = 170
12 + 192 = 204
145 - 74 = 71
113 + 36 = 149
215 - 80 = 135
148 + 125 = 273
159 - 103 = 56
198 + 22 = 220
152 - 50 = 102
165 + 11 = 176
198 + 52 = 250
171 + 107 = 278
207 - 9 = 198
130 + 31 = 161
35 + 120 = 155
41 + 206 = 247
5 + 127 = 132
198 + 58 = 256
201 - 62 = 139
245 - 163 = 82
259 - 113 = 146
127 + 4 = 131
109 + 96 = 205
128 - 114 = 14
200 - 119 = 81
273 - 32 = 241
18 + 34 = 52
187 - 101 = 86
177 - 171 = 6
128 + 137 = 265
11 + 223 = 234
17 + 218 = 235
33 - 4 = 29
249 + 22 = 271
150 - 27 = 123
272 - 150 = 122
191 - 10 = 181
210 - 84 = 126
182 - 151 = 31
63 + 81 = 144
207 - 146 = 61
216 - 3 = 213
219 - 169 = 50
127 - 86 = 41
12 + 181 = 193
7 + 218 = 225
44 + 23 = 67
54 + 147 = 201
42 + 113 = 155
121 - 39 = 82
73 + 124 = 197
67 + 151 = 218
41 + 231 = 272
63 + 58 = 121
259 - 211 = 48
71 + 119 = 190
208 - 195 = 13
215 - 17 = 198
79 + 142 = 221
109 + 107 = 216
106 + 38 = 144
204 - 88 = 116
245 - 69 = 176
222 + 25 = 247
57 + 56 = 113
100 - 44 = 56
83 + 62 = 145
196 + 77 = 273
218 - 51 = 167
84 + 7 = 91
29 - 6 = 23