问题 解答题
用简便方法计算.(必须写出主要过程)
2
3
-
1
2
+
3
8
)×241.1-
4
11
-
2
11
-
5
11
答案

(1)(

2
3
-
1
2
+
3
8
)×24,

=

2
3
×24-
1
2
×24+
3
8
×24,

=16-12+9,

=13;

(2)1.1-

4
11
-
2
11
-
5
11

=1.1-(

4
11
+
2
11
+
5
11
),

=1.1-1,

=0.1.

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