2.73/9.1简便计算还有22.3/9和22.3/99,简便计算

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2.73/9.1简便计算还有22.3/9和22.3/99,简便计算2.73/9.1简便计算还有22.3/9和22.3/99,简便计算2.73/9.1简便计算还有22.3/9和22.3/99,简便计算2

2.73/9.1简便计算还有22.3/9和22.3/99,简便计算
2.73/9.1简便计算
还有22.3/9和22.3/99,简便计算

2.73/9.1简便计算还有22.3/9和22.3/99,简便计算
2.73/9.1=0.3
22.3/9
=(18+4.3)/9
=2+43/90
=2又43/90
22.3/99
=(19.8+0.5)/99
=39.6/198+1/198
=40.6/198 .

2.73/9.1=0.3
22.3/9=2.477777.....
22.3/99=0.225252525.....