问题 解答题
用你喜欢的方法进行计算
101×99-99+1003.14×52-3.14×4275%×
4
5
+0.2×
3
4
答案

(1)101×99-99+100,

=(101-1)×99+100,

=100×99+100,

=9900+100,

=10000;

(2)3.14×52-3.14×42,

=3.14×(52-42),

=3.14×(25-16),

=3.14×9,

=28.26;

(3)75%×

4
5
+0.2×
3
4

=75%×(

4
5
+0.2),

=75%×1,

=75%.

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