问题 解答题
计算,能简算的要简算
4%×99+0.0475%×25+175×
3
4
3
8
+
7
10
)×40.
答案

(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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