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)
272 - 127 = 145
97 + 115 = 212
54 + 134 = 188
24 + 231 = 255
128 - 121 = 7
122 - 8 = 114
133 + 58 = 191
14 + 5 = 19
230 + 17 = 247
66 + 96 = 162
239 - 46 = 193
133 - 113 = 20
169 - 115 = 54
275 - 41 = 234
206 - 110 = 96
159 + 98 = 257
79 - 39 = 40
261 - 91 = 170
222 - 25 = 197
55 + 50 = 105
108 - 102 = 6
178 + 93 = 271
49 + 89 = 138
213 - 76 = 137
94 + 106 = 200
72 - 19 = 53
134 + 80 = 214
186 + 40 = 226
280 - 153 = 127
56 + 164 = 220
109 - 75 = 34
90 + 134 = 224
59 + 19 = 78
254 - 53 = 201
3 + 89 = 92
46 + 111 = 157
50 + 177 = 227
56 + 223 = 279
225 - 170 = 55
131 + 64 = 195
140 + 88 = 228
189 + 52 = 241
20 + 253 = 273
14 + 141 = 155
182 - 107 = 75
49 + 201 = 250
153 - 33 = 120
130 - 6 = 124
101 - 23 = 78
251 - 41 = 210
33 + 150 = 183
242 - 183 = 59
113 + 119 = 232
239 - 108 = 131
7 + 59 = 66
33 - 15 = 18
39 - 7 = 32
93 + 57 = 150
276 - 148 = 128
61 + 63 = 124
145 - 68 = 77
20 + 108 = 128
275 - 241 = 34
11 - 6 = 5
254 - 94 = 160
38 - 34 = 4
73 - 18 = 55
104 - 89 = 15
210 - 83 = 127
227 - 7 = 220
107 + 141 = 248
89 - 49 = 40
239 - 9 = 230
224 - 159 = 65
144 - 90 = 54
35 + 233 = 268
241 - 187 = 54
164 - 152 = 12
50 + 133 = 183
103 + 106 = 209
51 + 93 = 144
166 - 9 = 157
1 + 211 = 212
55 + 138 = 193
258 - 64 = 194
196 + 25 = 221
122 + 48 = 170
254 - 188 = 66
69 + 137 = 206
23 - 19 = 4
167 - 32 = 135
201 + 34 = 235
2 + 208 = 210
195 - 14 = 181
129 + 48 = 177
151 - 25 = 126
241 - 203 = 38
276 - 38 = 238
168 - 160 = 8
83 + 83 = 166