问题 解答题
计算(1)(-1)2×5+(-1)×52-14×5+(-1+5)2
(2)(-32)×(-
1
32
)-(
1
2
+
2
3
-
3
4
-
11
12
)
×24
答案

(1)原式=1×5-25-5+42

=5-25-5+16,

=-9;

(2)原式=1-(

1
2
×24+
2
3
×24-
3
4
×24-
11
12
×24),

=1-(12+16-18-22),

=1-12-16+18+22,

=13.

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