内容正文:
单元 7 第 7 单元计算易错专练
5 年级 上 R
1. 直接写出得数。
6 ÷ 0. 01 = 2. 5 × 2 = 7. 4 ÷ 3. 7 = 0. 54 ÷ 0. 18 =
32. 4 ÷ 3. 6 = 4. 8 ÷ 2. 4 = 3 ÷ 0. 6 = 4. 8 × 0. 5 =
7. 1 × 0. 05 = 0. 7 × 1. 2 = 9. 3 ÷ 3 = 64 ÷ 0. 8 =
18. 9 ÷ 0. 3 = 0. 1 ÷ 0. 01 = 6. 3 ÷ 7 = 12. 8 × 2 =
2. 列竖式计算。
8. 4 ÷ 0. 28 = 109. 2 ÷ 0. 42 = 80 ÷ 0. 25 =
3. 6 × 0. 056 = 1. 28 × 3. 2 = 3. 43 × 0. 23 =
3. 脱式计算。
(3. 9 - 2. 4) × 2 - 2. 4 0. 9 × [(0. 3 + 0. 2) ÷ 0. 5] 20 ÷ (5 + 5) × 0. 7
4. 解方程。
19x ÷9 = 171 7x ÷6 = 14 x ÷2. 7 + 5. 1 = 25. 1
86
单元 8 第 1 课时 数与代数(1)
5 年级 上 R
0. 5 × 6 = 7. 5 × 30 = 5. 2 × 0. 6 = 3. 9 ÷ 0. 3 =
3. 7 × 0. 8 = 8. 2 × 0. 1 = 12. 5 ÷ 5 = 56. 8 ÷ 8 =
4. 6 × 0. 6 = 12. 4 × 0. 5 = 3. 4 × 0. 7 = 1. 2 ÷ 0. 02 =
30 × 0. 67 = 0. 26 ÷ 13 = 72 ÷ 3. 6 = 5. 4 × 0. 2 =
2. 4 × 0. 7 = 5. 7 × 0. 01 = 1. 24 × 0. 3 = 4. 5 × 30 =
80 × 0. 9 = 19 ÷ 1. 9 = 15. 6 ÷ 0. 03 = 6. 3 ÷ 9 =
90 × 2. 1 = 15. 5 ÷ 0. 5 = 4. 5 × 0. 6 = 2. 8 × 0. 3 =
4. 3 × 70 = 5. 6 ÷ 0. 8 = 7. 3 × 0. 3 = 5. 6 ÷ 0. 4 =
12 × 0. 5 = 5 × 0. 45 = 0. 36 ÷ 2 = 0. 15 ÷ 0. 3 =
2. 7 × 3 = 6. 4 ÷ 0. 8 = 5. 2 ÷ 4 = 2. 13 ÷ 3 =
4. 23 × 1. 8 = 7. 8 ÷ 0. 75 = 15. 9 ÷ 4. 3≈
(得数保留两位小数)
220 - 4(3x +12) = 100 7. 5x =63 - 1. 5x (x -2. 5) ÷ 4 = 20
96
单元 8 第 2 课时 数与代数(2)
5 年级 上 R
4. 25 × 4 = 2. 3 ÷ 0. 1 = 3. 3 × 1. 1 = 63. 7 ÷ 7 =
0. 07 × 0. 5 = 3. 2 × 0. 5 = 1. 29 ÷ 3 = 0. 75 × 2 =
33 × 0. 04 = 3. 97 ÷ 100 = 5a +0. 6a = 4. 3m +m =
5 ÷ 2 = 7. 5x -4. 5x = 5a ×6a = 7. 5 × 0. 3 =
8. 4 ÷ 6 = 5. 4 ÷ 0. 9 = 1. 6 × 5 = 0. 125 × 0. 4 =
8. 1 ÷ 3 = 7. 6 ÷ 3. 8 = 3. 2 ÷ 0. 8 = 13. 2 ÷ 3. 3 =
85 ÷ 50 = 9. 8 ÷ 4 = 4. 5 × 0. 3 = 2. 6 × 0. 5 =
26 ÷ 5 = 6. 8 ÷ 0. 4 = 7. 14 × 0. 3 = 2. 48 ÷ 0. 4 =
2. 6 ÷ 20 = 1. 21 ÷ 11 = 10. 8 - 1. 8 = 5 × 0. 45 =
3 ÷ 0. 6 = 3. 4 ÷ 0. 17 = 1. 2 × 1. 2 = 0. 09 × 1. 1 =
2. 16 ÷ 0. 2 =