问题
解答题
计算 (1)(-25)+34+156+(-65) (2)-0.5+(-15
|
答案
(1)原式=-25-65+34+156
=-90+190
=100;
(2)原式=-0.5+17.5-15
-121 3 2 3
=17-28
=-11.
计算 (1)(-25)+34+156+(-65) (2)-0.5+(-15
|
(1)原式=-25-65+34+156
=-90+190
=100;
(2)原式=-0.5+17.5-15
-121 3 2 3
=17-28
=-11.