题目内容

计算
1
8
÷12.5%×(
2
3
+
3
4
)
(6.7×60%+3.3×60%)÷
1
4
10×(
8
5
-
3
8
÷37.5%)
(1)
1
8
÷
12.5%×(
2
3
+
3
4

=
1
8
÷
1
8
×
17
12

=1×
17
12

=1
5
12


(2)(6.7×60%+3.3×60%)÷
1
4

=(6.7+3.3)×0.6×4;
=10×0.6×4;
=24;

(3)10×(
8
5
-
3
8
÷
37.5%)
=10×(
8
5
-
3
8
÷
3
8
);
=10×(
8
5
-1
);
=10×
3
5

=6.
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