(3.75+4.1+2.25)×9.8 简便计算
问题描述:
(3.75+4.1+2.25)×9.8 简便计算
答
(3.75+4.1+2.25)×9.8
=(3.75+2.25+4.1)×9.8
=(6+4.1)×9.8
=(10+0.1)×9.8
=10×9.8+0.1×9.8
=98+0.98
=98.98