问题 解答题

简算.(要写出主要简便过程)

(1)3.6×3.6+1.4×3.6            (2)0.25×0.8×0.125×0.4              (3)2.7×1.5-2.7.

答案

(1)3.6×3.6+1.4×3.6,

=3.6×(3.6+1.4),

=3.6×5,

=18;

(2)0.25×0.8×0.125×0.4,

=(0.25×0.4)×(0.125×0.8),

=0.1×0.1,

=0.01;

(3)2.7×1.5-2.7,

=2.7×(1.5-1),

=2.7×0.5,

=1.35.

单项选择题
单项选择题