问题 解答题
计算题
(1)-35÷(-7)×(-
1
7
)

(2)(
2
3
-
11
12
-
14
15
)×(-60)

(3)3-2×(-5)2
(4)-14-(1-0.5)×
1
3
×[2-(-3)2]
答案

(1)-35÷(-7)×(-

1
7
)

=5×(-

1
7

=-

5
7

(2)(

2
3
-
11
12
-
14
15
)×(-60)

=-

2
3
×60+
11
12
×60+
14
15
×60

=-40+55+56

=71;

(3)3-2×(-5)2

=3-2×25

=3-50

=-47;

(4)-14-(1-0.5)×

1
3
×[2-(-3)2]

=-1-

1
2
×
1
3
×[2-9]

=-1-

1
6
×[-7]

=-1+

7
6

=

1
6

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