问题 解答题
仔细算一算:
(1)-20+(-14)-(-18)
(2)3-(-2)2÷(-3)×9
(3)-
9
+
364
-(-1)2012
(4)4-(-36)×(
1
6
+
5
9
-
7
12
)
答案

(1)原式=-20-14+18

=-34+18

=-16;

(2)原式=3-4×(-

1
3
)×9

=3+12

=15;

(3)原式=-3+4-1

=0;

(4)原式=4+36×

1
6
+36×
5
9
-36×
7
12

=4+6+20-21

=9.

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