题目内容

用你喜欢的方法计算.
125×32×25
48÷
8
3
+52×
3
8
15
2
3
-6.25+(4
1
3
-3
3
4
)
7.8÷[32×(1-
5
8
)+3.6]
解;(1)125×32×25,
=(125×8)×(25×4),
=1000×100,
=100000;

(2)48÷
8
3
+52×
3
8

=48×
3
8
+52×
3
8

=(48+52)×
3
8

=100×
3
8

=
75
2


(3)15
2
3
-6.25+(4
1
3
-3
3
4
),
=15
2
3
+4
1
3
-(6.25+3
3
4
),
=20-10,
=10;

(4)7.8÷[32×(1-
5
8
)+3.6],
=7.8÷[12+3.6],
=7.8÷15.6,
=0.5.
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