第7单元 小数的初步认识-【优佳好】2023-2024学年三年级下册数学口算计算能力提升（人教版）

单元 7 　 第 1 课时　 认识小数(教材 P91) 3 年级 下 R 60 × 70 = 96 ÷ 3 = 10 × 76 = 78 ÷ 3 = 500 ÷ 5 = 420 ÷ 7 = 20 × 65 = 66 × 60 = 18 × 40 = 24 × 20 = 750 ÷ 5 = 25 × 40 = 408 ÷ 4 = 11 × 60 = 63 × 30 = 630 ÷ 3 = 10 × 48 = 720 ÷ 6 = 480 ÷ 6 = 320 ÷ 4 = 30 × 22 = 101 × 8 = 82 × 30 = 19 × 20 = 210 × 4 = 20 × 36 = 30 × 90 = 84 ÷ 4 = 20 × 400 = 50 × 12 = 125 × 8 = 900 ÷ 3 = 30 × 43 = 540 ÷ 6 = 560 ÷ 4 = 280 ÷ 2 = 37 × 28 = 　 　 　 　 　 　 　 　 　 265 ÷ 8 = 　 　 　 　 　 　 　 　 　 85 × 26 = 184 ÷ 4 + 18 42 × (254 - 187) 91 ÷ 7 × 89 55 单元 7 　 第 2 课时　 一位小数的大小比较(教材 P93) 3 年级 下 R 14 × 20 = 80 × 40 = 208 ÷ 4 = 600 ÷ 3 = 31 × 30 = 303 ÷ 3 = 25 × 40 = 621 ÷ 3 = 960 ÷ 3 = 14 × 200 = 70 × 50 = 420 ÷ 2 = 210 ÷ 7 = 52 × 20 = 420 ÷ 7 = 36 × 20 = 350 ÷ 5 = 140 × 6 = 140 × 20 = 240 ÷ 6 = 18 × 30 = 480 ÷ 4 = 68 ÷ 2 = 360 ÷ 3 = 450 ÷ 9 = 240 ÷ 2 = 340 × 3 = 203 × 20 = 640 ÷ 8 = 50 × 17 = 750 ÷ 5 = 660 ÷ 6 = 18 × 50 = 408 ÷ 2 = 23 × 30 = 110 × 8 = 57 × 36 = 　 　 　 　 　 　 　 　 　 426 ÷ 5 = 　 　 　 　 　 　 　 　 　 872 ÷ 8 = 46 × 20 - 175 145 ÷ 5 × 28 52 × (436 - 373) 65 单元 7 　 第 3 课时　 练习课(教材 P94) 3 年级 下 R 20 × 70 = 20 × 11 = 96 ÷ 6 = 51 × 40 = 162 + 540 = 70 × 18 = 924 ÷ 3 = 707 ÷ 7 = 75 × 20 = 15 × 30 = 894 - 700 = 420 ÷ 7 = 40 × 27 = 30 × 46 = 27 × 90 = 440 ÷ 4 = 51 × 70 = 320 ÷ 4 = 185 + 112 = 90 × 15 = 540 ÷ 6 = 175 + 190 = 270 ÷ 9 = 80 × 18 = 900 ÷ 3 = 43 × 30 = 450 × 20 = 80 × 50 = 840 ÷ 7 = 210 ÷ 3 = 62 × 70 = 360 ÷ 6 = 12 × 80 = 110 × 7 = 65 × 20 = 108 × 5 = 924 ÷ 7 = 　 　 　 　 　 　 　 　 　 714 ÷ 8 = 　 　 　 　 　 　 　 　 　 36 × 89 = 　 　 　 　 验算: 53 × (189 - 134) 45 × 30 ÷ 6 48 × 63 - 782 75 单元 7 　 第 4 课时　 简单小数的加、减法(1)(教材 P96) 3 年级 下 R 0. 4 + 1. 3 = 0. 7 + 0. 2 = 6 + 0. 3 = 0. 7 + 0. 3 = 5. 4 + 2. 2 = 3. 5 - 1. 4 = 4. 6 + 0. 9 = 2. 8 + 3. 5 = 5. 1 + 9. 7 = 9. 5 - 4. 2 = 2. 2 + 4. 3 = 0. 2 + 0. 5 = 2. 1 + 2 = 0. 5 - 0. 2 = 3. 5 + 1. 4 = 0. 5 + 0. 8 = 4. 5 + 0. 9 = 6. 4 - 3. 3 = 10 - 8. 2 = 7. 3 + 2. 7 = 5. 4 - 3. 1 = 0. 6 - 0. 1 = 0. 5 + 0. 2 = 1. 8 - 0. 6 = 8. 1 + 0. 4 = 8. 1 - 0. 4 = 2. 6 - 0. 7 = 3. 8 + 6. 7 = 7. 5 + 2. 5 = 5.