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)
198 - 12 = 186
1 + 237 = 238
34 + 65 = 99
41 + 22 = 63
61 + 20 = 81
268 - 94 = 174
114 + 77 = 191
212 - 11 = 201
279 - 68 = 211
12 + 10 = 22
207 - 121 = 86
195 - 59 = 136
219 + 10 = 229
112 + 126 = 238
27 + 110 = 137
158 + 2 = 160
117 + 125 = 242
59 + 96 = 155
55 - 50 = 5
140 - 108 = 32
231 - 12 = 219
30 + 54 = 84
186 + 67 = 253
205 + 12 = 217
34 + 232 = 266
188 - 172 = 16
84 + 74 = 158
165 + 64 = 229
88 - 80 = 8
233 - 19 = 214
43 - 12 = 31
196 + 78 = 274
148 + 115 = 263
270 - 129 = 141
76 + 82 = 158
168 + 103 = 271
14 + 4 = 18
103 + 47 = 150
233 - 209 = 24
15 + 15 = 30
202 + 32 = 234
153 - 95 = 58
17 + 27 = 44
22 + 83 = 105
127 - 18 = 109
220 - 66 = 154
149 - 60 = 89
280 - 265 = 15
58 + 48 = 106
202 - 170 = 32
119 + 18 = 137
249 - 207 = 42
114 - 13 = 101
232 + 10 = 242
269 - 202 = 67
88 + 45 = 133
192 + 77 = 269
123 + 38 = 161
20 + 159 = 179
98 + 116 = 214
57 + 49 = 106
213 - 180 = 33
105 + 103 = 208
193 - 95 = 98
190 - 41 = 149
91 - 16 = 75
22 + 123 = 145
277 - 30 = 247
117 + 35 = 152
277 - 100 = 177
233 + 29 = 262
247 - 159 = 88
182 + 68 = 250
19 + 49 = 68
231 + 20 = 251
230 - 184 = 46
183 + 63 = 246
74 + 119 = 193
120 - 1 = 119
122 - 104 = 18
174 + 30 = 204
120 - 73 = 47
210 + 38 = 248
34 + 118 = 152
98 + 176 = 274
24 + 218 = 242
157 - 45 = 112
3 + 276 = 279
253 - 225 = 28
261 - 160 = 101
116 - 9 = 107
178 + 41 = 219
107 + 166 = 273
196 - 184 = 12
141 - 18 = 123
132 + 67 = 199
68 + 52 = 120
261 - 208 = 53
260 - 72 = 188
205 - 111 = 94