问题 解答题
计算下列各题(能简算的写出简算过程)
4.6×
9
10
+4.4÷1
1
9
+(1-0.1)

1110÷[56×(
3
7
-
3
8
)].
答案

(1)4.6×

9
10
+4.4÷1
1
9
+(1-0.1),

=

23
5
×
9
10
+
22
5
×
9
10
+0.9,

=(

23
5
+
22
5
+1)×
9
10

=10×

9
10

=9;

(2)1110÷[56×(

3
7
-
3
8
)],

=1110÷[56×

3
7
-56×
3
8
],

=1110÷[24-21],

=1110÷3,

=370.

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