第2单元 因数与倍数-【优佳好】2023-2024学年五年级下册数学口算计算能力提升（人教版）

单元 2 　 第 1 课时　 因数和倍数(教材 P5 ~ 6) 5 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　12 × 30 = 20 × 30 = 540 ÷ 6 = 740 ÷ 5 = 50 × 12 = 16 × 25 = 28 × 20 = 99 ÷ 9 = 30 × 21 = 450 ÷ 9 = 75 × 30 = 360 ÷ 12 = 25 × 40 = 640 ÷ 80 = 72 ÷ 3 = 15 × 60 = 480 ÷ 16 = 135 ÷ 15 = 41 × 3 = 3 × 52 = 123 ÷ 3 = 25 × 5 = 125 ÷ 5 = 250 ÷ 5 = 32 × 3 = 96 ÷ 6 = 480 ÷ 4 = 99 ÷ 11 = 54 × 20 = 108 ÷ 2 = 108 ÷ 54 = 22 × 30 = 33 × 30 = 450 ÷ 15 = 140 ÷ 7 = 840 ÷ 7 = 18 × 30 = 68 ÷ 4 = 320 ÷ 80 = 65 × 20 = 137 × 25 = 　 　 　 　 　 　 　 　 　 　 　 828 ÷ 12 = 　 　 　 　 　 　 　 　 　 　 　 285 × 53 = 384 ÷ 12 = 648 ÷ 18 = 308 × 12 = 5 单元 2 　 第 2 课时　 练习课(教材 P7) 5 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　70 ÷ 5 = 23 × 4 = 96 ÷ 16 = 480 ÷ 60 = 14 × 70 = 48 ÷ 2 = 560 ÷ 7 = 18 × 40 = 52 × 30 = 75 ÷ 3 = 190 × 5 = 36 ÷ 18 = 75 ÷ 15 = 42 ÷ 2 = 66 ÷ 3 = 170 ÷ 5 = 390 ÷ 13 = 10 × 57 = 930 ÷ 30 = 140 × 6 = 35 × 20 = 81 × 40 = 35 × 4 = 16 × 40 = 19 × 30 = 54 ÷ 18 = 750 ÷ 15 = 25 × 40 = 21 × 9 = 280 ÷ 14 = 69 ÷ 23 = 31 × 60 = 23 × 30 = 108 ÷ 2 = 22 × 40 = 780 ÷ 30 = 540 ÷ 6 = 140 × 30 = 450 ÷ 30 = 307 × 8 = 714 ÷ 17 = 　 　 　 　 　 　 　 　 　 　 128 × 36 = 　 　 　 　 　 　 　 　 　 　 672 ÷ 24 = 356 ÷ 89 = 219 × 45 = 876 ÷ 73 = 6 单元 2 　 第 3 课时　 2、5 的倍数的特征(教材 P9) 5 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　12 × 40 = 66 ÷ 3 = 810 ÷ 9 = 450 ÷ 90 = 78 × 10 = 45 × 30 = 260 ÷ 10 = 35 × 2 = 70 ÷ 35 = 700 ÷ 2 = 5 × 100 = 500 ÷ 2 = 19 × 3 = 57 ÷ 19 = 45 × 4 = 180 ÷ 4 = 32 × 20 = 190 ÷ 38 = 300 ÷ 5 = 640 ÷ 8 = 75 × 20 = 104 × 3 = 3 × 80 = 2 × 120 = 240 ÷ 2 = 35 × 30 = 13 × 9 = 125 × 8 = 18 × 40 = 605 × 40 = 15 × 20 = 75 ÷ 15 = 125 ÷ 5 = 14 × 50 = 320 × 8 = 450 ÷ 90 = 215 × 20 = 32 × 40 = 860 ÷ 4 = 515 ÷ 5 = 36 × 14 = 　 　 　 　 　 　 　 　 　 　 208 × 67 = 　 　 　 　 　 　 　 　 　 　 754 ÷ 29 = 102 × 85 = 504 ÷ 36 = 609 ÷ 29 = 验算: 验算: 验算: 7 单元 2 　 第 4 课时　 3 的倍数的特征(教材 P10) 5 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　35 × 20 = 800 ÷ 40 = 720 ÷ 60 = 53 × 40