题目内容

计算题:
(1)(﹣3)+(﹣4)﹣(+11)﹣(﹣9)
(2)23÷[(﹣3)3﹣(﹣4)]
(3)
(4)
(5)
(6)
(7)
(8).
解:(1)(﹣3)+(﹣4)﹣(+11)﹣(﹣9),
=﹣3﹣4﹣11+9,
=﹣9;
(2)23÷[(﹣3)3﹣(﹣4)],
=23÷(﹣27+24),
=﹣1;
(3),
=(﹣﹣)×(﹣60),
=×(﹣60),
=﹣31;
(4),
=﹣1÷25×(﹣)+0.2,
=﹣×(﹣)+0.2,
=;
(5),
=[﹣(+﹣)×24]÷5×(﹣1);
=[﹣(﹣)×24]÷5×(﹣1);
=××(﹣1);
=﹣;
(6),
=(﹣2)÷(×)×+5,
=﹣2×32×+5,
=﹣395;
(7),
=|﹣+|+|﹣4﹣4|,
=|﹣+|+8,
=+8,
=10;
(8),
=﹣1+8×5﹣{﹣[﹣12﹣×(﹣2)]}÷3,
=﹣1+40﹣[﹣(﹣12+)]÷3,
=39﹣4,
=35.
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