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)
142 + 8 = 150
257 - 101 = 156
178 + 18 = 196
182 - 8 = 174
199 - 95 = 104
141 - 61 = 80
46 + 227 = 273
135 - 127 = 8
185 - 25 = 160
182 - 89 = 93
135 - 43 = 92
169 + 74 = 243
278 - 98 = 180
131 - 70 = 61
38 + 67 = 105
143 + 99 = 242
8 + 162 = 170
4 - 3 = 1
118 + 58 = 176
186 - 11 = 175
63 + 92 = 155
46 + 62 = 108
137 - 109 = 28
121 + 127 = 248
27 + 185 = 212
195 + 64 = 259
265 - 160 = 105
208 - 112 = 96
208 - 78 = 130
152 + 68 = 220
17 + 183 = 200
218 - 69 = 149
58 + 199 = 257
264 - 68 = 196
128 - 53 = 75
60 + 41 = 101
238 - 232 = 6
4 + 127 = 131
61 + 209 = 270
93 + 153 = 246
30 + 141 = 171
213 - 32 = 181
132 + 74 = 206
251 - 45 = 206
233 - 112 = 121
238 + 40 = 278
43 + 143 = 186
275 - 62 = 213
51 + 36 = 87
228 - 131 = 97
206 - 42 = 164
152 - 94 = 58
30 + 180 = 210
10 + 63 = 73
50 - 16 = 34
83 + 38 = 121
211 - 86 = 125
12 + 72 = 84
152 - 133 = 19
17 + 188 = 205
270 - 144 = 126
11 + 186 = 197
162 - 100 = 62
96 - 78 = 18
267 - 176 = 91
98 + 160 = 258
120 - 41 = 79
47 - 24 = 23
228 - 145 = 83
127 + 64 = 191
194 - 28 = 166
32 + 245 = 277
204 - 50 = 154
30 + 228 = 258
169 - 150 = 19
245 + 2 = 247
164 + 21 = 185
137 - 82 = 55
246 - 111 = 135
248 - 92 = 156
157 + 51 = 208
75 + 201 = 276
113 + 154 = 267
148 - 85 = 63
17 + 130 = 147
6 + 106 = 112
48 + 194 = 242
158 - 8 = 150
111 - 37 = 74
59 + 11 = 70
235 - 144 = 91
212 - 107 = 105
265 - 83 = 182
249 - 114 = 135
142 + 40 = 182
216 - 162 = 54
1 + 209 = 210
161 - 83 = 78
73 + 6 = 79
145 - 126 = 19