问题 解答题
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
)
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

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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