用简便方法计算下面各题. 4.37×0.55+56.3×0.055; 2.5×1.6×1.25; 0.59×9.8; 53.6×38.2+536×6.08+53.6.

用简便方法计算下面各题.
4.37×0.55+56.3×0.055;
2.5×1.6×1.25;
0.59×9.8;
53.6×38.2+536×6.08+53.6.
数学人气:339 ℃时间:2019-08-19 16:14:47
优质解答
(1)4.37×0.55+56.3×0.055
=43.7×0.055+56.3×0.055
=(43.7+56.3)×0.055
=100×0.055
=5.5
(2)2.5×1.6×1.25
=2.5×2×0.8×1.25
=(2.5×2)×(0.8×1.25)
=5×1
=5
(3)0.59×9.8
=0.59×(10-0.2)
=0.59×10-0.59×0.2
=5.9-0.118
=5.782
(4)53.6×38.2+536×6.08+53.6
=53.6×38.2+53.6×60.8+53.6
=53.6×(38.2+60.8+1)
=53.6×100
=5360
我来回答
类似推荐
请使用1024x768 IE6.0或更高版本浏览器浏览本站点,以保证最佳阅读效果。本页提供作业小助手,一起搜作业以及作业好帮手最新版!
版权所有 CopyRight © 2012-2024 作业小助手 All Rights Reserved. 手机版