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)
74 + 116 = 190
38 + 240 = 278
220 - 35 = 185
73 + 9 = 82
187 + 71 = 258
33 + 82 = 115
192 - 80 = 112
277 - 107 = 170
10 + 80 = 90
161 - 111 = 50
157 - 58 = 99
244 - 51 = 193
14 + 157 = 171
219 - 108 = 111
221 - 38 = 183
260 + 10 = 270
215 - 21 = 194
73 + 43 = 116
12 + 187 = 199
263 - 155 = 108
106 - 92 = 14
89 - 23 = 66
158 + 77 = 235
111 + 87 = 198
166 - 2 = 164
268 - 46 = 222
180 - 159 = 21
53 + 178 = 231
204 - 126 = 78
230 - 203 = 27
250 - 127 = 123
155 - 70 = 85
258 - 204 = 54
167 - 133 = 34
74 + 99 = 173
129 - 117 = 12
198 - 124 = 74
263 - 7 = 256
236 - 64 = 172
52 + 212 = 264
219 - 196 = 23
33 + 154 = 187
84 + 113 = 197
96 - 3 = 93
28 + 63 = 91
190 - 45 = 145
79 + 141 = 220
115 - 19 = 96
249 - 161 = 88
179 + 67 = 246
154 - 118 = 36
12 + 127 = 139
71 + 9 = 80
180 - 29 = 151
28 + 159 = 187
208 - 52 = 156
15 + 208 = 223
238 - 164 = 74
232 - 151 = 81
10 + 9 = 19
203 + 59 = 262
185 - 64 = 121
36 + 98 = 134
253 - 67 = 186
46 + 85 = 131
108 + 72 = 180
106 + 135 = 241
238 - 183 = 55
148 - 8 = 140
204 - 174 = 30
75 + 150 = 225
230 - 119 = 111
172 - 167 = 5
122 + 5 = 127
18 + 75 = 93
38 + 9 = 47
92 + 20 = 112
184 + 32 = 216
59 + 20 = 79
273 - 60 = 213
253 - 53 = 200
173 - 27 = 146
230 - 12 = 218
268 - 135 = 133
18 + 239 = 257
188 + 77 = 265
184 - 4 = 180
211 - 183 = 28
239 - 8 = 231
46 + 65 = 111
197 + 22 = 219
14 + 250 = 264
14 + 53 = 67
241 - 72 = 169
242 - 72 = 170
237 - 195 = 42
14 + 190 = 204
175 + 48 = 223
251 - 49 = 202
244 + 17 = 261