第8单元 数学广角——优化-【优佳好】2023-2024学年四年级上册数学口算计算能力提升（人教版）

单元 8 　 第 1 课时　 沏茶问题 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　216 ÷ 72 = 200 × 15 = 280 ÷ 20 = 700 × 60 = 440 × 20 = 260 × 30 = 204 × 11 = 462 ÷ 22 = 164 ÷ 82 = 410 × 60 = 630 × 40 = 40 × 204 = 50 × 180 = 273 ÷ 13 = 730 - 180 = 70 × 300 = 450 ÷ 90 = 503 × 50 = 670 + 180 = 240 ÷ 60 = 20 × 350 = 960 ÷ 16 = 315 × 40 = 168 ÷ 42 = 234 × 30 = 260 × 20 = 130 × 50 = 270 × 3 = 800 ÷ 16 = 50 × 60 = 840 ÷ 7 = 630 ÷ 30 = 122 × 3 = 6 × 510 = 600 ÷ 25 = 320 ÷ 80 = 171 ÷ 9 = 125 × 48 = 200 × 99 = 560 ÷ 40 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　432 × 56 = 807 × 19 = 513 ÷ 57 = 630 × 25 = 463 ÷ 82 = 732 ÷ 36 = 56 单元 8 　 第 2 课时　 烙饼问题 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　300 ÷ 30 = 50 × 47 = 150 × 80 = 403 × 30 = 480 ÷ 60 = 260 ÷ 20 = 630 ÷ 70 = 410 × 30 = 140 × 70 = 490 ÷ 7 = 630 × 20 = 260 × 50 = 4800 ÷ 600 = 368 ÷ 4 = 650 ÷ 5 = 130 × 50 = 370 × 30 = 273 ÷ 13 = 960 ÷ 16 = 15 × 60 = 62 × 40 = 150 × 40 = 270 ÷ 30 = 160 × 80 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　852 ÷ 38 = 245 × 15 = 386 ÷ 64 = 140 × 45 = 208 × 35 = 972 ÷ 54 = 70 - 651 ÷ 21 1440 ÷ (48 × 5) 1050 ÷ (26 + 24) 66 单元 8 　 第 3 课时　 对策问题 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　120 × 70 = 56 × 30 = 210 × 40 = 640 ÷ 40 = 140 × 30 = 240 ÷ 30 = 490 ÷ 70 = 900 ÷ 15 = 960 ÷ 32 = 500 ÷ 25 = 800 ÷ 40 = 30 × 135 = 54 × 30 = 130 × 13 = 160 × 50 = 910 ÷ 70 = 240 ÷ 60 = 240 × 60 = 640 ÷ 16 = 260 × 20 = 200 × 35 = 30 × 17 = 480 ÷ 20 = 720 ÷ 36 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　736 ÷ 48 = 584 ÷ 29 = 408 × 23 = 276 × 39 = 756 ÷ 24 = 482 ÷ 60 = 900 ÷ (6 × 3) 840 ÷ (840 ÷ 12) 200 + 696 ÷ 29 76 单元 8 　 第 4 课时　 练习课 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　50 × 150 = 100 ÷ 25 = 80 × 150 = 340 × 50 = 306 × 30 = 144 ÷ 12 = 770 ÷ 11 = 960 ÷ 16 = 160 × 70 = 270 × 50 = 320 ÷ 16 = 121 ÷ 11 = 580 ÷ 20 = 150 × 60 = 350 × 20 = 840 ÷ 60 = 1100 ÷ 55 = 780 ÷ 13 = 460 ÷ 23 = 120 ÷ 30 = 230 × 40 = 240 ÷ 30 = 240 × 50 = 600 ÷ 40 =