问题 解答题
5
6
-
3
4
+
2
3
-
1
2

②23÷(-
4
9
)×(-
2
3
2
③(-3)2×23-(-4)÷2
④(
1
4
-
1
36
-
1
6
-
1
12
)÷(-
1
48

⑤-14÷(-5)2×(-
5
3
)+|0.8-1|
答案

5
6
-
3
4
+
2
3
-
1
2

=

10
12
-
9
12
+
8
12
-
6
12

=

3
12
=
1
4

②23÷(-

4
9
)×(-
2
3
2

=8×(-

9
4
4
9

=-8;

③(-3)2×23-(-4)÷2,

=9×8+2,

=74;

④(

1
4
-
1
36
-
1
6
-
1
12
)÷(-
1
48
),

=(

1
4
-
1
36
-
1
6
-
1
12
)×(-48),

=-12+

4
3
+8+4,

=

4
3

⑤-14÷(-5)2×(-

5
3
)+|0.8-1|,

=-1×

1
25
×(-
5
3
)+
1
5

=

4
15

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