(13-8.4)*0.99简便计算

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(13-8.4)*0.99简便计算(13-8.4)*0.99简便计算(13-8.4)*0.99简便计算(13-8.4)*0.99=4.6*0.99=4.6*(1-0.01)=4.6*1-4.6*0.0

(13-8.4)*0.99简便计算
(13-8.4)*0.99简便计算

(13-8.4)*0.99简便计算
(13-8.4)*0.99
=4.6*0.99
=4.6*(1-0.01)
=4.6*1-4.6*0.01
=4.6-0.046
=4.554

13-8.4=4.6
4.6×(1-0.01)=4.6-0.046=4.554