内容正文:
单元八 第 1 课时 小数的意义和读写
3 年级 下 S
2
3 +
1
3 =
5
7 -
2
7 =
6
8 -
4
8 =
2
9 +
3
9 =
5
6 -
2
6 =
4
7 -
2
7 =
7
10 -
4
10 =
1 - 17 =
4
8 +
4
8 =
1 - 46 =
2
8 +
4
8 =
3
6 +
3
6 =
3
9 -
2
9 =
1
7 +
5
7 =
2
4 +
2
4 =
3
5 +
2
5 =
1 - 37 =
1 - 58 =
4
5 -
2
5 =
8
9 -
7
9 =
5
6 -
4
6 =
3
4 +
1
4 =
2
9 +
1
9 =
7
8 -
2
8 =
6
7 -
4
7 =
3
7 +
4
7 =
2
6 +
4
6 =
7
9 -
4
9 =
17 × 45 = 214 + 356 = 402 - 278 =
72 ÷ 8 × 146 (349 - 275) × 18 18 × 40 - 158
45
单元八 第 2 课时 小数的大小比较
3 年级 下 S
1
4 +
3
4 =
5
7 -
4
7 =
3
4 -
1
4 =
2
5 +
3
5 =
4
6 -
1
6 =
7
9 -
2
9 =
2
10 +
3
10 =
2
9 +
4
9 =
3
8 +
3
8 =
5
7 -
2
7 =
3
6 -
1
6 =
1 - 25 =
4
5 +
1
5 =
7
9 -
4
9 =
2
3 +
1
3 =
1 - 48 =
7
8 -
5
8 =
3
6 +
2
6 =
4
5 -
3
5 =
1
2 +
1
2 =
2
4 +
2
4 =
1 - 27 =
8
10 -
4
10 =
3
7 +
2
7 =
7
8 -
3
8 =
1 - 56 =
2
7 +
5
7 =
5
8 -
2
8 =
48 × 61 = 327 + 576 = 408 - 259 =
543 - (115 + 224) (403 - 373) × 22 2000 - 48 × 12
55
单元八 第 3 课时 简单的小数加减法(1)
3 年级 下 S
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 =
1. 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. 5 + 1. 4 =
8. 7 - 3. 6 =
9. 2 - 7 =
0. 8 + 0. 6 =
2. 7 - 0. 3 =
5. 4 - 2. 2 =
2. 6 + 0. 7 =
7. 3 - 2. 6 =
1. 6 + 2. 9 =
8. 2 - 4. 7 =
9. 1 - 6. 8 =
9. 6 + 5. 8 = 6. 3 + 4. 7 = 0. 5 + 4. 9 =
6. 3 - 2. 8 = 5. 4 - 2. 6 = 9. 3 - 7. 5 =
65
单元八 第 4 课时 简单的小数加减法(2)
3 年级 下 S
3. 2 - 1. 6 =
0. 3 + 0. 6 =
7. 1 + 2. 5 =
6. 5 + 4 =
3. 5 + 7. 8 =
4. 6 + 4. 7 =
1. 1 + 1. 5 =
6. 7 - 4. 8 =
1. 7 + 1. 9 =
3. 3 - 1. 7 =
5. 4 + 1. 8 =
3. 3 + 2. 4 =
10. 6 - 2. 3 =
4. 9 - 0. 9 =
9. 6 - 6. 9 =
6. 1 - 3. 5 =
1. 8 + 4. 1 =
4. 9 - 3. 8 =
0. 5 + 2. 3 =
5. 4 + 2. 8 =
7. 2 - 4. 8 =
1 - 0. 8 =
6. 5 - 0. 4 =
3. 7 + 4. 7 =
8. 2 + 2. 6 =
4. 6 - 0. 9 =