问题 解答题
计算:
(1)(
50
-
8
2
               
(2)
3
2
20
•(-15)•(-
1
3
48
)
答案

(1)原式=(5

2
-2
2
)÷
2
=3
2
÷
2
=3;

(2)原式=

3
2
×2
5
×(-15)×(-
1
3
×4
3

=

3
2
×2×(-15)×(-
1
3
)×4×(
5
×
3

=60

15

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