看谁算得又对又快。                                                                                                                                                                                                                      

8+6＝	13﹣7＝	11﹣3＝	15﹣7＝
12﹣4＝	17﹣9＝	6+70＝	30+8＝
11﹣2＝	9+7＝	16﹣8＝	18﹣9＝
66﹣6＝	98﹣90＝	7+50＝	37﹣7＝
90+9＝	65﹣5＝	87﹣80＝	9+60＝