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)
68 + 108 = 176
164 + 87 = 251
53 - 15 = 38
93 + 42 = 135
28 + 15 = 43
239 - 193 = 46
259 - 163 = 96
177 - 89 = 88
48 + 82 = 130
188 + 22 = 210
12 + 216 = 228
163 - 59 = 104
116 - 18 = 98
117 + 35 = 152
82 + 173 = 255
161 - 131 = 30
119 + 125 = 244
234 - 187 = 47
183 - 113 = 70
89 + 2 = 91
183 - 26 = 157
19 + 230 = 249
68 + 160 = 228
74 - 70 = 4
138 - 49 = 89
259 - 226 = 33
147 + 37 = 184
121 - 80 = 41
41 + 104 = 145
272 - 242 = 30
14 + 117 = 131
182 + 45 = 227
93 - 67 = 26
154 - 30 = 124
217 - 180 = 37
231 - 110 = 121
90 + 96 = 186
211 - 23 = 188
189 - 109 = 80
209 + 29 = 238
17 + 99 = 116
248 - 237 = 11
149 + 70 = 219
103 + 143 = 246
155 + 8 = 163
160 - 74 = 86
219 - 1 = 218
73 + 83 = 156
178 + 10 = 188
12 + 263 = 275
255 - 196 = 59
13 + 263 = 276
36 + 3 = 39
4 + 79 = 83
35 + 33 = 68
229 - 96 = 133
248 - 88 = 160
179 - 137 = 42
197 + 47 = 244
232 - 101 = 131
259 - 37 = 222
211 + 13 = 224
178 - 135 = 43
157 + 78 = 235
33 + 191 = 224
277 - 242 = 35
237 - 189 = 48
137 + 135 = 272
265 - 149 = 116
2 + 11 = 13
196 - 182 = 14
16 + 129 = 145
34 + 142 = 176
88 - 25 = 63
209 - 38 = 171
112 + 165 = 277
46 - 31 = 15
158 - 125 = 33
243 - 210 = 33
210 - 49 = 161
14 + 25 = 39
113 - 87 = 26
166 + 47 = 213
167 + 14 = 181
139 + 33 = 172
229 - 51 = 178
44 + 109 = 153
62 + 23 = 85
250 - 110 = 140
70 + 91 = 161
272 - 144 = 128
270 - 86 = 184
140 - 81 = 59
122 - 8 = 114
42 + 136 = 178
175 - 141 = 34
65 + 3 = 68
223 + 6 = 229
197 + 26 = 223
141 + 28 = 169