题目内容
计算: (1)(﹣5)+12
(2)22+(﹣4)﹣(﹣2)+4
(3)
(4)
(5)
(6)
(2)22+(﹣4)﹣(﹣2)+4
(3)
(4)
(5)
(6)
解:(1)(﹣5)+12
=﹣5+12
=7;
(2)22+(﹣4)﹣(﹣2)+4
=22﹣4+2+4
=24;
(3)
=﹣
=﹣1+
;
(4)
=100×
=
;
(5)
=
×(18﹣13+4)
=6;
(6)
=﹣1×
+
=﹣
.
=﹣5+12
=7;
(2)22+(﹣4)﹣(﹣2)+4
=22﹣4+2+4
=24;
(3)
=﹣
=﹣1+
(4)
=100×
=
(5)
=
=6;
(6)
=﹣1×
=﹣
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