问题
解答题
计算: (1)-4-28-(-19)+(-24), (2)-11×2-(-30)÷(-10), (3)1-(
(4)4
|
答案
(1)原式=-4-28+19-24-------------------------------------------2
=-37-------------------------------------------4
(2)原式=-22-3-------------------------------------------2
=-25-------------------------------------------4
(3)原式=1+10-------------------------------------------2
=11-------------------------------------------4
(4)原式=4
×(-9×1 2
-0.8)÷(-51 9
)--------------------------11 4
=
×(-9 2
)×(-9 5
)-------------------------------------------24 21
=
-------------------------------------------454 35