第5单元 认识方程-【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）

单元五 　 第 1 课时　 字母表示数 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　a × 8 = 1. 8 × 0. 03 = 5. 3 × 4 = 0. 7 × 0. 3 = 4. 7 × y = 70 × 0. 14 = 2. 4 × 6 = 30 × 0. 09 = 9 × m = 0. 09 × 70 = 0. 07 × 0. 5 = 3. 2 × 0. 3 = 6 × b = 2. 4 × 0. 3 = 3. 5 × 0. 01 = 2. 02 × 0. 4 = 1. 2 × 3 = 0. 7 × 5 = 3. 6 × 1. 2 = 5. 6 × y = 2. 1 × x = 1. 6 × 0. 3 = 1. 75 × 2 = 7 × a = m × 1 = 120 × 0. 7 = 3 × 0. 3 = 6. 5 × t = 2. 5 × 2. 5 = 23 × 0. 01 = 10 × 2. 5 = x × 6 = 0. 5 × 8. 4 = 4. 2 × 0. 1 = 0. 56 × 0. 2 = a × 14 = 0. 5 × 0. 9 = 5 × 0. 4 = 0. 49 × 0. 7 = 2 × k = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　7. 01 × 5. 3 = 10. 8 × 1. 5 = 23. 4 × 0. 6 = 16. 12 × 99 + 16. 12 4. 3 × 50 × 0. 2 1. 2 × (9. 6 + 2. 4) 34 单元五 　 第 2 课时　 等量关系 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　8. 5 × 0. 5 = 2. 5 × 4 = 9. 5 × 4 = 0. 81 × 3 = 0. 3 × 6 = 5 × 2. 4 = 2. 8 × 0. 7 = 0. 6 × 12 = 0. 08 × 0. 2 = 4. 2 × 0. 2 = 0. 35 × 4 = 2. 8 × 0. 4 = 3. 2 × 0. 4 = 0. 36 × 0. 6 = 1. 01 × 6 = 80 × 1. 25 = 6. 4 × 0. 5 = 10 × 0. 05 = 15 × 0. 08 = 3. 8 × 9 = 6. 3 × 0. 7 = 1. 25 × 100 = b × 1 = 2. 3 × 0. 6 = 1. 5 × 3. 3 = 6. 2 × 0. 2 = x × 4 = 13. 6 × 4 = 5. 5 × 0. 11 = 0. 01 × 1000 = m × 6 = m × m = 0. 32 × 1. 2 = 0. 21 × 7 = 0. 8 × 10 = 6. 7 × x = 7. 2 × 0. 03 = 8. 4 × 0. 2 = 0. 7 × 0. 6 = a × 5 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　5. 8 × 12 = 1. 2 × 0. 025 = 2. 88 × 3. 2 = 26. 4 × 3. 6 - 3. 6 × 16. 4 4. 9 × 5. 6 + 0. 51 × 56 8. 9 × 102 44 单元五 　 第 3 课时　 方程(1) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　6 × 0. 4 = 0. 12 × 3 = 0. 09 × 9 = 35. 4 × 2 = 1. 3 × 2 = 7. 01 × 100 = 14. 6 × 0. 02 = 0. 36 × 0. 5 = 16. 8 × 0 = 0. 45 × 0. 05 = 9. 9 × 0. 9 = 1. 35 × 0. 4 = 2. 04 × 0. 5 = 1. 8 × 0. 24 = 3. 63 × 100 = 1. 75 × 0. 4 = 2. 4 - 0. 24 = 1. 81 × 3 = 1. 15 × 4 = 2. 6 × 0. 2 = 4. 8 × 1. 25 = 3. 6 × 0. 4 = 0. 7 × 0. 8 = 9. 9 × 0. 3 = 1. 6 + 4 = 30 × 1. 8 = 13. 2 × 0. 2 = 7. 2 × 0. 5 = 0. 25 × 4 = 5 × 1. 02 = 3. 2 × 6 = 7. 8 × 3 = 4. 2 × 5 = 6. 05 × 0. 4 =