题目内容

在如表格的长方形里涂上颜色，表示
1
2
×
2
3
的意义．
由分析可得：

1
2
×
2
3
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相关题目
直接写出得数．
1
2
÷6=		15÷
5
7
=
7
12
÷
7
4
=
7
6
×
7
15
=
0.33=
1
3
×
9
4
=
2
3
×36=
4
5
÷
7
15
=
1-
2
5
=
1
6
-
1
7
=
2
5
÷6=
2
7
÷
1
3
=
6km的2/3是______km；______吨的2/5是24吨．
30kg的______/______是50kg；______m比9/8m的2/3少1/2m．
直接写得数．
3
4
×
8
15
=
5
7
÷
5
7
=
8
13
÷4=
1÷
4
9
=		0.25÷0375=28÷
7
8
=
7
15
÷
2
15
=		9÷
1
9
=		12÷
1
5
=
0÷
8
13
×
5
7
=
1
2
×
1
4
表示______，a2表示______．
直接写出得数．
1-9=
5
6
×120=		20×
1
5
=
5
7
×
2
5
=
5
17
×0=
3
5
÷3=		4÷
2
3
=
7
8
÷
7
8
=
3
4
×
3
4
=
1
4
+
1
3
=
1
4
+
2
3
=
3
5
-
1
2
=
4
5
-
2
3
=
直接写出得数．
3
4
×40=
3
2
÷
1
2
=		25×
3
5
=
7
9
×
3
7
=
14
15
÷7=
4
9
÷
2
3
=		1-50%=
1
3
÷
2
7
=
5
6
×
3
10
=
6
7
×
2
3
=
口算
6×
1
7
=
7
10
×
5
7
=
2
3
×
2
3
=
6
7
+6=
2
5
×
1
2
=
8
9
×4=		0.5-
1
4
=
14
45
×
15
21
=
24÷3×2可以改写成（　　）
A．24×
2
3
B．24÷
2
3
C．24×
3
2

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