67×1/4+21/2×3.75−41/2×25%=_.

问题描述:

67×

1
4
+2
1
2
×3.75−4
1
2
×25%=______.

67×

1
4
+2
1
2
×3.75-4
1
2
×25%
=67×
1
4
+2
1
2
×3
3
4
-4
1
2
×
1
4

=(67-4
1
2
)×
1
4
+
5
2
×
15
4

=
125
2
×
1
4
+
75
8

=
125
8
+
75
8

=25
故答案为:25.