1.  直接写出得数。                                                                                                                                      

4＋8＝	7＋9＝	9＋8＝	8＋6－10＝
3＋8＝	8＋6＝	6＋9＝	9－7＋8＝
5＋6＝	7＋4＝	8＋5＝	14－4－6＝