第3单元 小数乘法-【优佳好】2023-2024学年四年级下册数学口算计算能力提升（北师大版）

单元三 　 第 1 课时　 买文具 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　0. 9 × 2 = 0. 7 × 7 = 1. 2 × 4 = 0. 8 × 9 = 0. 1 × 100 = 0. 6 × 6 = 1. 4 × 2 = 2. 1 × 4 = 3. 2 × 3 = 6. 2 × 1 = 0. 1 × 50 = 1. 4 × 3 = 1. 3 × 3 = 2. 2 × 4 = 0. 7 × 5 = 2. 3 × 2 = 5. 4 × 1 = 4. 4 × 2 = 0. 8 × 4 = 0. 1 × 5 = 1. 5 × 2 = 0. 7 × 9 = 1. 3 × 2 = 0. 1 × 10 = 0. 4 × 8 = 0. 8 × 7 = 0. 6 × 4 = 4. 2 × 2 = 0. 6 × 7 = 1. 2 × 6 = 0. 7 × 8 = 0. 8 × 5 = 0. 6 × 9 = 0. 9 × 5 = 1. 2 × 3 = 0. 6 × 2 = 1. 1 × 8 = 3. 3 × 3 = 3. 1 × 3 = 0. 4 × 6 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　13. 58 + 2. 34 = 3. 35 + 10. 92 = 16. 05 - 3. 69 = 4. 75 + 5. 37 + 5. 25 5. 9 - 4. 8 + 2. 8 43. 96 - 10. 35 + 8. 04 12 单元三 　 第 2 课时　 小数点搬家(1) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　3. 5 × 10 = 0. 2 × 100 = 180 ÷ 1000 = 12. 2 ÷ 10 = 8. 04 × 100 = 4 ÷ 10 = 2615 ÷ 10 = 5. 53 × 100 = 0. 08 × 10 = 0. 13 ÷ 10 = 0. 068 × 100 = 24 ÷ 100 = 0. 12 × 10 = 0. 29 × 10 = 0. 13 × 10 = 42. 5 ÷ 100 = 35 ÷ 100 = 0. 45 × 10 = 0. 2 ÷ 10 = 11. 1 × 10 = 45 ÷ 1000 = 29 ÷ 100 = 0. 29 × 100 = 30. 5 ÷ 10 = 0. 872 × 100 = 4 ÷ 100 = 0. 4 ÷ 100 = 36. 5 ÷ 1000 = 35. 6 ÷ 10 = 1. 4 × 10 = 0. 025 × 1000 = 42 ÷ 100 = 7700 ÷ 100 = 0. 07 × 10 = 12 ÷ 1000 = 0. 88 × 1000 = 0. 01 ÷ 10 = 0. 09 × 100 = 0. 35 × 100 = 2. 6 ÷ 100 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　13. 76 - 5. 19 = 12. 13 - 9. 28 = 5. 83 + 11. 42 = 19. 75 - (7. 75 + 4. 51) 12. 45 + 4. 91 + 1. 28 15. 13 + 2. 88 - 1. 39 22 单元三 　 第 3 课时　 小数点搬家(2) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　1. 2 × 1000 = 20 × 100 = 0. 15 × 100 = 19. 3 × 10 = 0. 5 ÷ 100 = 2. 4 × 100 = 0. 99 × 10 = 3. 25 × 100 = 2. 8 × 10 = 0. 6 × 100 = 3. 88 × 1000 = 5. 01 × 1000 = 1. 6 ÷ 1000 = 3. 6 ÷ 10 = 44 ÷ 100 = 0. 72 × 100 = 0. 25 × 1000 = 0. 37 × 1000 = 4. 215 × 10 = 32 ÷ 1000 = 0. 7 ÷ 10 = 1. 25 × 10 = 6. 3 ÷ 100 = 45 ÷ 100 = 0. 02 × 1000 = 0. 8 × 10 = 8. 1 ÷ 100 = 0. 11 × 1000 = 0. 3 × 100 = 0. 33 ÷ 10 = 0. 02 × 10 = 0. 52 × 100 = 1. 3 × 100 = 1. 0