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)
153 + 45 = 198
122 + 64 = 186
85 + 148 = 233
193 - 14 = 179
24 + 103 = 127
254 - 161 = 93
76 + 181 = 257
11 + 106 = 117
249 - 182 = 67
216 + 46 = 262
234 - 224 = 10
105 - 14 = 91
140 - 87 = 53
155 - 113 = 42
37 + 125 = 162
256 - 59 = 197
52 + 52 = 104
128 + 44 = 172
126 - 117 = 9
250 - 96 = 154
126 - 108 = 18
248 - 126 = 122
158 - 41 = 117
15 + 37 = 52
105 + 128 = 233
211 + 1 = 212
185 - 101 = 84
26 + 182 = 208
254 - 1 = 253
98 + 18 = 116
139 - 74 = 65
115 - 45 = 70
246 + 17 = 263
40 + 81 = 121
27 + 207 = 234
91 + 20 = 111
235 - 224 = 11
101 + 171 = 272
157 + 96 = 253
30 + 231 = 261
181 - 63 = 118
153 + 89 = 242
217 - 87 = 130
21 + 119 = 140
240 + 28 = 268
126 - 74 = 52
272 - 27 = 245
188 - 55 = 133
29 + 12 = 41
190 - 181 = 9
251 + 9 = 260
128 + 26 = 154
198 + 24 = 222
96 + 20 = 116
269 - 213 = 56
179 - 77 = 102
79 + 28 = 107
214 - 189 = 25
258 - 230 = 28
159 - 60 = 99
70 + 77 = 147
28 + 192 = 220
229 - 170 = 59
34 - 27 = 7
60 + 88 = 148
99 + 123 = 222
260 - 89 = 171
203 - 31 = 172
249 - 162 = 87
170 + 31 = 201
256 - 118 = 138
97 + 168 = 265
103 + 19 = 122
250 - 190 = 60
174 - 127 = 47
31 + 128 = 159
199 - 121 = 78
192 - 128 = 64
278 - 126 = 152
2 + 36 = 38
107 + 155 = 262
272 - 269 = 3
221 - 185 = 36
178 - 160 = 18
25 - 23 = 2
25 + 217 = 242
96 + 158 = 254
73 + 55 = 128
223 - 115 = 108
270 - 237 = 33
26 + 26 = 52
118 + 10 = 128
239 - 94 = 145
116 - 69 = 47
172 - 159 = 13
240 - 14 = 226
259 - 126 = 133
49 + 225 = 274
212 + 13 = 225
24 + 76 = 100