问题 解答题
用你喜欢的方法计算下面各题
(1)201-5406÷51
(2)(
5
9
+
2
3
)×(
7
8
-
5
16

(3)
7
8
×
13
9
+
13
9
÷8
(4)6.48÷[(3.3-2.7)×0.9].
答案

(1)201-5406÷51,

=201-106,

=95;

(2)(

5
9
+
2
3
)×(
7
8
-
5
16
),

=

11
9
×
9
16

=

11
16

(3)

7
8
×
13
9
+
13
9
÷8,

=

7
8
×
13
9
+
13
9
×
1
8

=(

7
8
+
1
8
)×
13
9

=1×

13
9

=

13
9

(4)6.48÷[(3.3-2.7)×0.9],

=6.48÷[0.6×0.9],

=6.48÷0.54,

=12.

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