问题 解答题
用你喜欢的方法计算.
9.66÷3.22÷0.25
19.6×10.127.35×99+27.350.47×9.9.
答案

(1)9.66÷3.22÷0.25,

=3÷0.25,

=12;

(2)19.6×10.1,

=19.6×(10+0.1),

=19.6×10+19.6×0.1,

=196+1.96,

=197.96;

(3)27.35×99+27.35,

=27.35×(99+1),

=27.35×100,

=2735;

(4)0.47×9.9,

=0.47×(10-0.1),

=0.47×10-0.47×0.1,

=4.7-0.047,

=4.653.

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