23.9-0.6*0.6-0.64怎么简便计算

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23.9-0.6*0.6-0.64怎么简便计算23.9-0.6*0.6-0.64怎么简便计算23.9-0.6*0.6-0.64怎么简便计算23.9-0.6*0.6-0.64=23.9-0.36-0.6

23.9-0.6*0.6-0.64怎么简便计算
23.9-0.6*0.6-0.64怎么简便计算

23.9-0.6*0.6-0.64怎么简便计算
23.9-0.6*0.6-0.64
=23.9-0.36-0.64
=23.9-(0.36+0.64)
=23.9-1
=22.9