题目内容

计算,能简算的要简算
4%×99+0.0475%×25+175×
3
4
3
8
+
7
10
)×40.
(1)4%×99+0.04,
=0.04×99+0.04,
=0.04×(99+1),
=0.04×100,
=4;

(2)75%×25+175×
3
4

=
3
4
×25+175×
3
4

=
3
4
×(25+175),
=
3
4
×200,
=150;

(3)(
3
8
+
7
10
)×40,
=
3
8
×40+
7
10
×40,
=15+28,
=43.
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