问题
解答题
计算一: (1)(+3)+(-2) (2)(-4)-1 (3)-5×3 (4)(-
(5)-
|
答案
(1)(+3)+(-2)=1;
(2)(-4)-1=-5;
(3)-5×3=-15;
(4)(-
)×4=-2;1 2
(5)-
×(-6)=4.2 3
计算一: (1)(+3)+(-2) (2)(-4)-1 (3)-5×3 (4)(-
(5)-
|
(1)(+3)+(-2)=1;
(2)(-4)-1=-5;
(3)-5×3=-15;
(4)(-
)×4=-2;1 2
(5)-
×(-6)=4.2 3