内容正文:
单元 8 第 1 课时 平均数(教材 P90)
4 年级 下 R
88 ÷ 4 = 15 × 30 = 6. 8 - 4. 2 = 8. 5 + 1. 37 =
240 ÷ 40 = 480 ÷ 3 = 150 × 20 = 360 ÷ 60 =
108 × 4 = 540 ÷ 6 = 660 ÷ 11 = 0. 9 + 9. 1 =
8. 2 + 1. 8 = 4. 5 + 15. 5 = 3. 7 + 6. 3 = 8. 5 + 0. 5 =
11 - 5. 6 = 2. 3 + 7 = 320 ÷ 2 = 18 × 50 =
8. 8 + 0. 9 = 2. 3 - 0. 8 = 3. 4 + 5. 1 = 4. 5 + 5. 9 =
2. 6 + 10. 7 = 540 ÷ 9 = 960 ÷ 60 = 1. 8 + 2. 3 =
3. 7 + 6. 6 = 8 - 4. 7 = 4. 5 + 6. 8 = 13. 5 - 2. 8 =
4. 36 + 7. 85 = 12. 3 - 5. 87 = 7. 5 - 1. 92 =
(52 + 39) × 26 - 128 18. 32 - 6. 3 + 3. 7 9. 56 - (12. 08 - 4. 36)
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单元 8 第 2 课时 复式条形统计图(教材 P95)
4 年级 下 R
1. 8 + 0. 3 = 8. 16 + 3. 44 = 6. 4 - 2. 9 = 1. 8 + 5. 5 =
15 × 40 = 840 ÷ 40 = 704 × 5 = 80 × 90 =
8000 ÷ 40 = 2. 8 + 4. 5 = 1. 2 + 2. 8 = 8. 2 - 5. 9 =
4 - 2. 8 = 3 - 1. 5 = 4. 5 + 2. 8 = 4. 6 + 2. 7 =
1 - 0. 7 = 1. 6 + 5. 2 = 720 ÷ 8 = 640 ÷ 8 =
17 × 40 = 9. 2 - 5. 3 = 4. 2 - 1. 8 = 5. 2 - 1. 4 =
4. 1 - 1. 9 = 15 × 40 = 960 ÷ 30 = 1. 8 + 1. 2 =
2. 8 + 4. 6 = 8. 14 - 5. 89 = 2. 53 + 4. 8 = 7 - 3. 25 =
38. 6 + 1. 28 + 1. 46 15. 4 - 0. 82 + 1. 67 960 ÷ (12 + 540 ÷ 15)
35. 2 + 7. 6 + 14. 8 + 12. 4 125 × 33 - 125 × 25 125 × (8 + 80)
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单元 8 第 3 课时 练习课(教材 P98)
4 年级 下 R
450 ÷ 50 = 4. 8 + 4. 6 = 9 - 7. 2 = 15 × 80 =
2. 8 - 1. 2 = 1. 3 + 0. 7 = 25 × 40 = 5. 5 + 4. 5 =
8. 3 - 2. 17 = 3 + 4. 7 = 220 × 30 = 720 ÷ 60 =
40 × 90 = 1. 9 + 4. 5 = 3. 3 + 2. 8 = 0. 9 + 1. 2 =
1. 3 + 5. 7 = 1. 7 + 0. 7 = 3. 4 + 0. 8 = 240 ÷ 6 =
10 - 0. 7 = 1 - 0. 98 = 8. 4 - 2. 91 = 350 × 20 =
12 - 7. 8 = 1. 5 + 9. 5 = 2. 6 + 4. 8 = 6. 1 - 1. 2 =
10 - 4. 45 = 900 × 6 = 145 × 20 = 700 ÷ 5 =
8. 67 - 3. 75 + 2. 25 13. 4 + 6. 34 - 8. 49 [398 - (107 + 116)] ÷ 25
57 × 15 + 23 × 15 73. 18 - (27. 6 - 12. 82) 70 - 15. 8 - 26. 2
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单元 8 第 8 单元计算易错专练
4 年级 下 R
1. 直接写出得数。