问题 解答题
下列各题怎样简便就怎样计算.
0.125×25×32              
3
5
÷
5
6
×
5
18
20
17
-(
3
17
+
2
3
)            
1
4
+
4
5
-
7
10
)×20.
答案

(1)0.125×25×32,

=(0.125×8)×(4×25),

=1×100,

=100;

(2)

3
5
÷
5
6
×
5
18

=

3
5
×
6
5
×
5
18

=

1
5

(3)

20
17
-(
3
17
+
2
3
),

=

20
17
-
3
17
-
2
3

=1-

2
3

=

1
3

(4)(

1
4
+
4
5
-
7
10
)×20,

=

1
4
×20+
4
5
×
20-
7
10
×
20,

=5+16-14,

=7.

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