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爱口算ikousuan.cn，第1页共10页。
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爱口算ikousuan.cn，第2页共10页。
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爱口算ikousuan.cn，第3页共10页。
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42-23= |
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爱口算ikousuan.cn，第4页共10页。
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15-5= |
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18-3= |
36-17= |
39-8= |
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14-14= |
42-26= |
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28-26= |
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爱口算ikousuan.cn，第5页共10页。
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19-8= |
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7-3= |
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25-1= |
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39-26= |
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31-30= |
30-9= |
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6-3= |
13-12= |
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21-7= |
38-15= |
37-29= |
44-23= |
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38-10= |
43-24= |
43-1= |
23-5= |
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32-10= |
49-28= |
46-31= |
25-17= |
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8-8= |
33-9= |
33-18= |
26-10= |
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8-4= |
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爱口算ikousuan.cn，第6页共10页。
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爱口算ikousuan.cn，第7页共10页。
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爱口算ikousuan.cn，第10页共10页。
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