看一看,填一填
A.
C.从前面看是
的立体图形是()。
从上面看是
的立体图形是()。
从左面看是
的立体图形是()。
A.
C.从前面看是
从上面看是
从左面看是
答案
B、C;A、B;A、B
解析
分别观察三个立体图形的三视图:
1. 从前面观察:图形A看到左列3个正方形、右列1个正方形;图形B看到左列3个正方形、右列2个正方形;图形C看到左列3个正方形、右列2个正方形,符合要求的是B、C。
2. 从上面观察:图形A看到横向并排2个正方形;图形B看到横向并排2个正方形;图形C看到2行2列共4个正方形,符合要求的是A、B。
3. 从左面观察:图形A看到纵向竖排3个正方形;图形B看到纵向竖排3个正方形;图形C看到2列正方形,不符合要求,符合要求的是A、B。
1. 从前面观察:图形A看到左列3个正方形、右列1个正方形;图形B看到左列3个正方形、右列2个正方形;图形C看到左列3个正方形、右列2个正方形,符合要求的是B、C。
2. 从上面观察:图形A看到横向并排2个正方形;图形B看到横向并排2个正方形;图形C看到2行2列共4个正方形,符合要求的是A、B。
3. 从左面观察:图形A看到纵向竖排3个正方形;图形B看到纵向竖排3个正方形;图形C看到2列正方形,不符合要求,符合要求的是A、B。
0.5 + 0.4 =
1.2 - 0.6 =
0.7 + 0.8 =
2.3 + 1.5 =
3.6 - 1.2 =
4.1 - 2.3 =
1.8 + 0.9 =
5.4 - 2.8 =
0.25 + 0.35 =
3.2 + 2.7 =
6.7 - 3.9 =
7.5 - 4.6 =
0.6 + 1.11 =
8.2 - 5.7 =
2.4 + 3.3 =
4.5 + 1.4 =
9.8 - 4.2 =
1.6 - 0.9 =
5.9 + 2.6 =
0.9 - 0.2 =
3.8 + 2.1 =
7.3 + 1.7 =
4.4 - 1.9 =
6.5 - 2.7 =
2.8 + 4.2 =
8.9 - 6.3 =
0.45 + 0.55 =
1.25 + 0.65 =
9.1 - 5.4 =
7.6 - 3.8 =
1.2 - 0.6 =
0.7 + 0.8 =
2.3 + 1.5 =
3.6 - 1.2 =
4.1 - 2.3 =
1.8 + 0.9 =
5.4 - 2.8 =
0.25 + 0.35 =
3.2 + 2.7 =
6.7 - 3.9 =
7.5 - 4.6 =
0.6 + 1.11 =
8.2 - 5.7 =
2.4 + 3.3 =
4.5 + 1.4 =
9.8 - 4.2 =
1.6 - 0.9 =
5.9 + 2.6 =
0.9 - 0.2 =
3.8 + 2.1 =
7.3 + 1.7 =
4.4 - 1.9 =
6.5 - 2.7 =
2.8 + 4.2 =
8.9 - 6.3 =
0.45 + 0.55 =
1.25 + 0.65 =
9.1 - 5.4 =
7.6 - 3.8 =
答案
0.5 + 0.4 = 0.9
1.2 - 0.6 = 0.6
0.7 + 0.8 = 1.5
2.3 + 1.5 = 3.8
3.6 - 1.2 = 2.4
4.1 - 2.3 = 1.8
1.8 + 0.9 = 2.7
5.4 - 2.8 = 2.6
0.25 + 0.35 = 0.6
3.2 + 2.7 = 5.9
6.7 - 3.9 = 2.8
7.5 - 4.6 = 2.9
0.6 + 1.11 = 1.71
8.2 - 5.7 = 2.5
2.4 + 3.3 = 5.7
4.5 + 1.4 = 5.9
9.8 - 4.2 = 5.6
1.6 - 0.9 = 0.7
5.9 + 2.6 = 8.5
0.9 - 0.2 = 0.7
3.8 + 2.1 = 5.9
7.3 + 1.7 = 9
4.4 - 1.9 = 2.5
6.5 - 2.7 = 3.8
2.8 + 4.2 = 7
8.9 - 6.3 = 2.6
0.45 + 0.55 = 1
1.25 + 0.65 = 1.9
9.1 - 5.4 = 3.7
7.6 - 3.8 = 3.8
1.2 - 0.6 = 0.6
0.7 + 0.8 = 1.5
2.3 + 1.5 = 3.8
3.6 - 1.2 = 2.4
4.1 - 2.3 = 1.8
1.8 + 0.9 = 2.7
5.4 - 2.8 = 2.6
0.25 + 0.35 = 0.6
3.2 + 2.7 = 5.9
6.7 - 3.9 = 2.8
7.5 - 4.6 = 2.9
0.6 + 1.11 = 1.71
8.2 - 5.7 = 2.5
2.4 + 3.3 = 5.7
4.5 + 1.4 = 5.9
9.8 - 4.2 = 5.6
1.6 - 0.9 = 0.7
5.9 + 2.6 = 8.5
0.9 - 0.2 = 0.7
3.8 + 2.1 = 5.9
7.3 + 1.7 = 9
4.4 - 1.9 = 2.5
6.5 - 2.7 = 3.8
2.8 + 4.2 = 7
8.9 - 6.3 = 2.6
0.45 + 0.55 = 1
1.25 + 0.65 = 1.9
9.1 - 5.4 = 3.7
7.6 - 3.8 = 3.8
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