问题 解答题

计算下面各题,能简算的要简算.

12.5×16×0.5

4.8÷0.16÷0.3

48.7-32.76÷8.4

0.57×102.

答案

(1)12.5×16×0.5,

=12.5×(2×8)×0.5,

=(12.5×8)×(2×0.5),

=100×1,

=100;

(2)4.8÷0.16÷0.3,

=4.8÷(0.16×0.3),

=4.8÷0.048,

=100;

(3)48.7-32.76÷8.4,

=48.7-3.9,

=44.8;

(4)0.57×102,

=0.57×(100+2),

=0.57×100+0.57×2,

=57+1.14,

=58.14.

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