21.25*8简便计算球答案QAQ

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21.25*8简便计算球答案QAQ21.25*8简便计算球答案QAQ21.25*8简便计算球答案QAQ21.25*8=21.25*4*2=85*2=17021.25*8=(20+1.25)*8=20*

21.25*8简便计算球答案QAQ
21.25*8简便计算
球答案QAQ

21.25*8简便计算球答案QAQ
21.25*8
=21.25*4*2
=85*2
=170

21.25*8
=(20+1.25)*8
=20*8+1.25*8
=160+10
=170

21.25×8
=20×8+1.25×8
=160+10
=170
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21.25*8
=21.25*4*2
=85*2
=170 。