计算:(1)-4-28-(-19)+(-24),(2)-11×2-(-30)÷(-10),(3)1-( 3 4 + 7

2025-04-03 14:18:15
推荐回答(1个)
回答1:

(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
1
2
×(-9×
1
9
-0.8)÷(-5
1
4
)--------------------------1
=
9
2
×(-
9
5
)×(-
4
21
)-------------------------------------------2
=
54
35
-------------------------------------------4