题目内容

1
7
×36%+36%×
6
7
48%×10.7-0.7×48%
5
8
×0.42+
3
8
×42%
1
4
×
3
4
+25%×75%
(1)
1
7
×36%+36%×
6
7

=(
1
7
+
6
7
)×36%,
=36%;

(2)48%×10.7-0.7×48%,
=(10.7-0.7)×48%,
=10×48%,
=4.8;

(3)
5
8
×
0.42+
3
8
×42%,
=(
5
8
+
3
8
)×0.42,
=0.42;

(4)
1
4
×
3
4
+25%×75%,
=
3
16
+
3
16

=
3
8
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