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.