问题
解答题
简便计算.(要写出简算过程) (1)4.05-2.86-0.14(2)75×60%+24×
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答案
(1)4.05-2.86-0.14,
=4.05-(2.86+0.14),
=4.05-3,
=1.05;
(2)75×60%+24×
+0 6,3 5
=75×0.6+24×0.6+0.6,
=(75+24+1)×0.6,
=100×0.6,
=60.
简便计算.(要写出简算过程) (1)4.05-2.86-0.14(2)75×60%+24×
|
(1)4.05-2.86-0.14,
=4.05-(2.86+0.14),
=4.05-3,
=1.05;
(2)75×60%+24×
+0 6,3 5
=75×0.6+24×0.6+0.6,
=(75+24+1)×0.6,
=100×0.6,
=60.