问题 解答题
计算下面各题.
720+280÷5
36.5×1.4-8.51÷3.7
1
2
÷
2
3
-
2
5
(156×
4
13
-26)×
8
11
4
3
+
5
2
)÷(2-
3
2
[4-(
3
4
-
3
8
)]×
4
29
答案

(1)720+280÷5,

=720+56,

=776;

(2)36.5×1.4-8.51÷3.7,

=51.1-2.3,

=48.4;

(3)

1
2
÷
2
3
-
2
5

=

1
2
×
3
2
-
2
5

=

3
4
-
2
5

=

7
20

(4)(156×

4
13
-26)×
8
11

=(48-26)×

8
11

=22×

8
11

=16;

(5)(

4
3
+
5
2
)÷(2-
3
2
),

=

23
6
÷
1
2

=

23
6
×2,

=

23
3

(6)[4-(

3
4
-
3
8
)]×
4
29

=[4-

3
8
4
29

=

29
8
×
4
29

=

1
2

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