口算练习
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670 - 663 =338 - 183 =417 + 571 =248 + 291 =518 + 150 =640 + 300 =136 - 109 =287 + 696 =535 - 135 =279 - 222 =868 - 372 =598 + 250 =659 + 288 =366 - 152 =276 + 440 =145 + 136 =172 - 101 =354 + 636 =218 - 191 =815 - 109 =992 - 554 =134 + 810 =908 - 379 =341 + 230 =305 + 380 =405 + 278 =924 - 610 =411 - 380 =807 - 446 =267 + 117 =514 + 406 =155 - 100 =138 + 258 =420 + 578 =119 + 721 =504 + 397 =333 + 428 =280 + 681 =268 - 202 =432 - 280 =571 + 134 =480 + 165 =107 - 100 =542 - 327 =429 - 353 =182 + 529 =183 + 205 =104 + 588 =289 - 163 =
649 - 397 =
210 + 377 =
122 - 117 =
282 + 565 =
124 - 119 =
514 - 461 =
520 - 462 =
174 + 775 =
852 - 407 =
199 - 126 =
194 + 295 =
271 - 187 =
196 + 555 =
126 + 314 =
261 + 540 =
293 - 137 =390 + 230 =408 - 272 =757 - 700 =
430 - 248 =922 - 407 =184 + 754 =595 - 360 =
134 + 331 =894 - 101 =115 - 113 =228 + 467 =
501 - 280 =373 + 511 =245 + 263 =481 - 355 =
482 + 463 =597 + 194 =576 - 498 =393 + 248 =
310 + 346 =397 + 327 =450 + 257 =171 + 410 =
807 + 136 =283 - 251 =532 - 397 =605 - 601 =
632 - 273 =154 + 137 =243 - 183 =603 - 473 =
373 + 538 =854 - 292 =131 + 161 =310 + 631 =
竖式计算
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