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)
102 + 101 = 203
114 - 110 = 4
36 + 107 = 143
40 - 27 = 13
77 + 50 = 127
138 - 13 = 125
103 + 157 = 260
57 + 36 = 93
147 - 112 = 35
7 + 96 = 103
43 + 161 = 204
38 + 231 = 269
101 + 23 = 124
108 - 17 = 91
265 - 44 = 221
112 + 49 = 161
198 - 54 = 144
213 - 150 = 63
266 + 8 = 274
39 + 203 = 242
176 - 124 = 52
134 + 95 = 229
191 - 101 = 90
197 - 167 = 30
162 + 115 = 277
36 - 7 = 29
53 - 3 = 50
102 - 58 = 44
35 + 113 = 148
105 + 156 = 261
82 + 42 = 124
204 - 60 = 144
169 - 95 = 74
261 - 108 = 153
278 - 77 = 201
252 - 183 = 69
166 - 96 = 70
155 - 141 = 14
159 - 24 = 135
146 - 29 = 117
121 + 159 = 280
134 + 87 = 221
175 + 47 = 222
194 + 68 = 262
234 - 96 = 138
129 - 34 = 95
176 - 29 = 147
38 + 239 = 277
212 - 93 = 119
148 - 67 = 81
24 + 217 = 241
187 + 14 = 201
70 + 108 = 178
181 - 48 = 133
219 - 60 = 159
139 + 128 = 267
64 + 92 = 156
2 + 72 = 74
223 - 201 = 22
254 + 14 = 268
34 - 8 = 26
237 + 20 = 257
272 - 32 = 240
7 + 217 = 224
136 + 122 = 258
143 - 99 = 44
214 - 67 = 147
267 - 122 = 145
141 + 105 = 246
61 + 84 = 145
123 - 91 = 32
97 + 125 = 222
65 + 154 = 219
1 + 23 = 24
5 + 191 = 196
20 + 27 = 47
202 - 200 = 2
110 + 30 = 140
145 + 40 = 185
1 + 223 = 224
183 - 179 = 4
193 + 17 = 210
142 - 59 = 83
23 + 120 = 143
43 + 134 = 177
106 - 26 = 80
131 - 111 = 20
71 - 48 = 23
141 + 70 = 211
235 - 80 = 155
250 - 24 = 226
148 + 110 = 258
124 + 146 = 270
213 - 169 = 44
169 + 71 = 240
92 + 84 = 176
217 + 32 = 249
117 + 7 = 124
213 - 18 = 195
67 + 114 = 181