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)
72 + 193 = 265
258 - 56 = 202
221 - 162 = 59
237 - 20 = 217
135 - 46 = 89
175 - 58 = 117
273 - 223 = 50
135 - 88 = 47
245 - 133 = 112
87 + 94 = 181
280 - 28 = 252
151 - 4 = 147
65 + 165 = 230
85 - 56 = 29
75 + 204 = 279
252 - 58 = 194
39 + 176 = 215
256 - 99 = 157
123 - 23 = 100
129 + 70 = 199
246 + 18 = 264
68 + 67 = 135
95 - 90 = 5
111 + 100 = 211
185 - 60 = 125
41 + 21 = 62
43 + 134 = 177
251 - 203 = 48
209 + 43 = 252
278 - 150 = 128
173 - 13 = 160
120 - 14 = 106
40 + 173 = 213
160 - 115 = 45
255 - 135 = 120
245 - 163 = 82
140 + 126 = 266
46 - 28 = 18
157 - 35 = 122
199 - 23 = 176
272 - 100 = 172
57 + 72 = 129
49 + 194 = 243
189 + 55 = 244
204 - 86 = 118
237 - 191 = 46
153 - 102 = 51
172 - 123 = 49
195 + 38 = 233
28 + 240 = 268
247 - 69 = 178
136 + 58 = 194
128 + 1 = 129
49 + 166 = 215
223 - 197 = 26
165 - 140 = 25
9 + 266 = 275
213 - 34 = 179
110 + 65 = 175
147 - 76 = 71
101 + 154 = 255
274 - 252 = 22
213 + 65 = 278
16 + 43 = 59
3 + 177 = 180
31 + 3 = 34
234 + 36 = 270
76 + 9 = 85
13 + 133 = 146
185 + 7 = 192
171 - 33 = 138
13 + 152 = 165
224 - 114 = 110
119 - 22 = 97
209 + 55 = 264
280 - 49 = 231
230 - 4 = 226
55 + 116 = 171
216 - 191 = 25
19 + 172 = 191
138 - 4 = 134
188 + 80 = 268
6 + 7 = 13
2 + 28 = 30
247 - 141 = 106
19 + 84 = 103
188 + 6 = 194
259 - 176 = 83
151 + 38 = 189
170 - 47 = 123
10 + 118 = 128
28 + 176 = 204
63 + 60 = 123
134 + 116 = 250
45 + 131 = 176
184 + 39 = 223
223 - 128 = 95
166 - 133 = 33
265 - 109 = 156
186 - 149 = 37