问题 解答题
合理灵活的计算.
2
3
+
1
4
-
5
12
)÷
1
36
5.5×36+55×6.4[
7
8
-(
1
4
+
1
2
)]÷
1
5
3
5
-
1
3
)÷
2
3
×
7
8
答案

(1)(

2
3
+
1
4
-
5
12
)÷
1
36

=(

2
3
+
1
4
-
5
12
)×36

=

2
3
×36+
1
4
×36-
5
12
×36,

=24+9-15,

=18;

(2)5.5×36+55×6.4,

=5.5×36+5.5×64,

=(36+64)×5.5,

=100×5.5,

=550;

(3)[

7
8
-(
1
4
+
1
2
)]÷
1
5

=[

7
8
-
6
8
1
5

=

1
8
×5,

=

5
8

(4)(

3
5
-
1
3
)÷
2
3
×
7
8

=

4
15
×
3
2
×
7
8

=

7
20

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