0.68*99简便计算
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0.68*99简便计算
0.68*99简便计算
0.68*99简便计算
=0.68*(100-1)
=0.68*100-0.68*1
=68-0.68
=67.32
0.68×99
=0.68×(100-1)
=0.68×100-0.68×1
=68-0.68
=67.32
0.68*99简便计算
0.68*99简便计算
0.68*99简便计算
=0.68*(100-1)
=0.68*100-0.68*1
=68-0.68
=67.32
0.68×99
=0.68×(100-1)
=0.68×100-0.68×1
=68-0.68
=67.32