问题
解答题
计算: (1)0-(+8)+(-2.7)-(+5); (2)|-16|x(-
(3)-24+
|
答案
(1)原式=0-8-2.7-5
=-15.7;
(2)原式=16×(-
-3 4
+1 2
)3 8
=16×(-
)+16×(-3 4
)+16×1 2 3 8
=-12-8+6
=-20+6
-14;
(3)原式=-16+
(6+16)1 2
=-16+11
=-5.
计算: (1)0-(+8)+(-2.7)-(+5); (2)|-16|x(-
(3)-24+
|
(1)原式=0-8-2.7-5
=-15.7;
(2)原式=16×(-
-3 4
+1 2
)3 8
=16×(-
)+16×(-3 4
)+16×1 2 3 8
=-12-8+6
=-20+6
-14;
(3)原式=-16+
(6+16)1 2
=-16+11
=-5.