问题 解答题
计算题
(1)(+3
2
3
)+(-2
7
8
)+(+1
1
8
)-(+3
5
12
)+(-3
2
3
)+(+5
7
12
)

(2)(1
4
5
-2
1
3
+3
7
10
-4
8
15
)÷(-
1
30
)

(3)(-2)÷[(-
1
2
)
2
×(
1
2
)
3
]×|-
3
4
|-(-48)

(4)-22×(-
1
3
)+4+(-3)3÷2
1
4
×(-
2
3
)2
答案

(1)原式=(3

2
3
-3
2
3
)+(-2
7
8
+1
1
8
)+(-3
5
12
+5
7
12
)=-1
3
4
+2
1
6
=
5
12

(2)原式=(1

4
5
-2
1
3
+3
7
10
-4
8
15
)×(-30)=
9
5
×(-30)-
7
3
×(-30)+
37
10
×(-30)-
68
15
×(-30)=-54+70-111+136=41;

(3)原式=(-2)÷(

1
4
×
1
8
)×
3
4
+48=(-2)×32×
3
4
+48=-48+48=0;

(4)原式=-4×(-

1
3
)+4+(-27)×
4
9
×
4
9
=
4
3
+4-
4
3
=4.

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