问题
解答题
计算: (1)22+(-17)+8+(-22); (2)(-0.125)+(+5)+(-7)+(+
(3)(-1.76)+(-19.15)+(-8.24). |
答案
(1)22+(-17)+8+(-22)
=22-17+8-22
=-9;
(2)(-0.125)+(+5)+(-7)+(+
)+(+2)1 8
=-0.125+5-7+
+21 8
=0;
(3)(-1.76)+(-19.15)+(-8.24)
=-1.76-19.15-8.24
=-29.15.