问题 解答题
计算:
(1)7
3
4
-5
4
11
-3
1
4
-6
7
11
+9
1
4
+2
1
4

(2)(-0.5)÷1
5
6
×(-11)

(3)-7×
5
4
+(-5)×(-
5
4
)-
2
5

(4)(
2
3
-
11
12
-
14
15
)×(-60)

(5)-32-
1
3
×[(-5)2×(-
3
5
)-240÷(-4)×
1
4
]
答案

(1)7

3
4
-5
4
11
-3
1
4
-6
7
11
+9
1
4
+2
1
4

=(7

3
4
-3
1
4
+9
1
4
+2
1
4
)-(5
4
11
+6
7
11

=16-12

=4;

(2)(-0.5)÷1

5
6
×(-11)

=

1
2
×
6
11
×(-11)

=-3;

(3)-7×

5
4
+(-5)×(-
5
4
)-
2
5

=(-7+5)×

5
4
-
2
5

=(-2)×

5
4
-
2
5

=-

5
2
-
2
5

=-2

9
10

(4)(

2
3
-
11
12
-
14
15
)×(-60)

=-

2
3
×60+
11
12
×60+
14
15
×60

=-40+55+56

=71;

(5)-32-

1
3
×[(-5)2×(-
3
5
)-240÷(-4)×
1
4
]

=-9-

1
3
×[25×(-
3
5
)+60×
1
4
]

=-9-

1
3
×[-15+15]

=-9-

1
3
×0

=-9-0

=-9.

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