题目内容

(2008?拱墅区)
直接写出得数
1
9
=
12×
1
20
=
 1
2
5
+
1
3
=
 
4
5
÷
8
15
=
(1.125-
1
8
)÷0.75=
3.6÷0.06=
8
75
×
15
64
=
7
10
-
3
5
=
5
12
×
3
10
=
0.13+
7
8
+0.87=
分析:本题根据运算法则直接运算.
解答:解:9÷
1
9
=81                12×
1
20
=
3
5
                      1
2
5
+
1
3
=
26
15
             
4
5
÷
8
15
=
3
2

(1.125-
1
8
)÷0.75=
4
3
        3.6÷0.06=60                    
8
75
×
15
64
=
1
40
           
7
10
-
3
5
=
1
10

5
12
×
3
10
=
1
8
                  0.13+
7
8
+0.87=1
7
8
点评:本题用运算法则直接运算,要看清楚数字和运算符号,能用简算的可用简算.
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