(3.75+4.1+2.25)×9.8 简便计算

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(3.75+4.1+2.25)×9.8简便计算(3.75+4.1+2.25)×9.8简便计算(3.75+4.1+2.25)×9.8简便计算(3.75+4.1+2.25)×9.8=(3.75+2.25+

(3.75+4.1+2.25)×9.8 简便计算
(3.75+4.1+2.25)×9.8 简便计算

(3.75+4.1+2.25)×9.8 简便计算
(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