> 数学 >
计算.
(108÷25)×(75÷18)
3.5×(20.6-16.8÷4.8)
( 
3
2
-
5
6
)×( 
2
3
+
6
5
)        
3
14
×[7-4÷( 
2
15
+
2
3
)].
人气:484 ℃ 时间:2019-12-09 21:46:56
解答
(1)(108÷25)×(75÷18),
=
108
25
×
75
18

=18;
(2)3.5×(20.6-16.8÷4.8),
=3.5×(20.6-3.5),
=3.5×17.1,
=59.85;
(3)(
3
2
-
5
6
)×(
2
3
+
6
5
),
=
2
3
×
28
15

=
56
45

(4)
3
14
×[7-4÷( 
2
15
+
2
3
)],
=
3
14
×[7-4÷
4
5
],
=
3
14
×[7-4×
5
4
],
=
3
14
×[7-5],
=
3
14
×2,
=
3
7
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版