题目内容

计算:
(1)-4-28-(-19)+(-24),
(2)-11×2-(-30)÷(-10),
(3)1-(
3
4
+
7
12
-
7
6
)×(-60),
(4)4
1
2
×[-32×(-
1
3
)
2
-0.8]÷(-5
1
4
)
(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
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