第8单元 分数的初步认识-【优佳好】2023-2024学年三年级上册数学口算计算能力提升（人教版）

单元 8 　 第 1 课时　 几分之一 3 年级 上 R 80 × 4 = 63 + 27 = 140 × 4 = 270 × 3 = 340 - 120 = 6 × 112 = 405 × 7 = 14 × 2 = 45 × 2 = 150 - 70 = 38 + 152 = 467 - 300 = 240 × 5 = 350 × 3 = 207 × 7 = 542 - 142 = 480 + 130 = 0 × 976 = 854 - 254 = 340 × 2 = 182 + 251 = 600 - 270 = 640 × 5 = 150 × 3 = 491 + 109 = 720 - 360 = 680 × 2 = 43 × 5 = 507 - 248 = 715 × 8 = 240 × 8 = 227 + 156 = 372 - 118 = 293 × 6 = 243 × (15 ÷ 3) 8 × (136 + 129) 345 - 75 × 3 85 单元 8 　 第 2 课时　 几分之几 3 年级 上 R 300 × 3 = 120 × 4 = 350 - 120 = 700 × 6 = 108 × 5 = 224 × 2 = 370 + 140 = 314 × 4 = 480 - 160 = 270 + 430 = 500 - 270 = 357 - 127 = 745 × 2 = 438 - 300 = 236 + 264 = 438 - 138 = 750 × 2 = 490 × 6 = 437 + 210 = 536 × 3 = 672 - 238 = 325 × 3 = 480 × 2 = 517 + 223 = 607 × 9 = 375 + 225 = 540 - 326 = 800 × 9 = 480 - 375 = 689 + 242 = 352 × 9 = 315 + 286 = 273 × 5 = 580 × 4 = 128 × (315 - 308) 273 × 6 + 500 72 ÷ 8 × 150 95 单元 8 　 第 3 课时　 同分母分数的大小比较 3 年级 上 R 140 + 120 = 35 × 2 = 203 × 4 = 340 - 170 = 112 × 3 = 140 × 5 = 350 + 250 = 480 × 2 = 7 × 500 = 6 × 18 = 732 + 256 = 648 - 532 = 368 - 275 = 83 × 4 = 480 × 3 = 308 + 452 = 520 - 326 = 75 × 2 = 470 - 253 = 640 + 218 = 326 × 2 = 507 × 7 = 840 × 2 = 916 - 375 = 245 + 136 = 154 × 3 = 450 × 4 = 800 - 475 = 375 + 248 = 546 × 3 = 600 - 376 = 536 - 274 = 814 × 2 = 457 × 5 = 114 + (245 - 108) 345 × (80 - 74) 117 + 412 × 3 06 单元 8 　 第 4 课时　 练习课 3 年级 上 R 15 × 2 = 270 - 140 = 630 + 180 = 800 - 450 = 140 × 3 = 75 × 2 = 320 × 3 = 30 × 5 = 304 × 2 = 511 × 3 = 936 - 600 = 320 × 2 = 204 × 4 = 160 × 4 = 22 × 4 = 140 + 350 = 307 × 5 = 217 + 183 = 420 × 3 = 115 + 185 = 740 - 290 = 81 ÷ 9 = 700 - 220 = 240 × 3 = 63 × 4 = 543 - 143 = 300 - 180 = 115 × 4 = 372 + 186 = 275 - 148 = 327 × 8 = 810 - 227 = 543 × 6 = 542 + 176 = (18 + 143) × 5 72 ÷ 8 × 43 152 × 3 - 200 16 单元 8 　 第 5 课时　 同分母分数的加、减法 3 年级 上 R 1 4 + 1 4 = 7 9 - 6 9 = 1 - 34 = 1 5 + 2 5 = 6 7 - 3 7 = 3 8 + 3 8 = 1 - 59 = 1 8 + 2 8 = 1 7 + 3 7 = 3 9 + 4 9 = 1 8 + 3 8 = 5 7 - 4 7 = 2 3 - 1 3 = 5 6 - 4 6 = 3 8 + 2 8 = 7 9 - 5 9 =