摘要：用简便方法计算.9分 329´101 54´98+46´98 98´125
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| 用简便方法计算． 15-0.3= |
6-0.5= | 3.9+12.1= | 2.13+14= | 0.91+1.25= |
| 10-0.76= | 3.99-0.9= | 0.567+4.44= | 0.37+0.6= | 7.46+2.54= |
| 1-0.08= | 45.9+1= | 6.87-3.25= | 0.25+0.75= | 0.78+0.22= |
| 6.1-5.7= |