一年级上册口算题大全：十几的连减

一年级上册口算题大全：十几的连减！

18-8-1=            16-6-2=            18-8-2=           19-9-7=

15-5-6=            16-6-7=            14-4-9=           19-9-3=

19-9-4=            12-2-8=            11-1-1=           18-8-2=

12-2-4=            12-2-6=            14-4-5=           18-8-2=

13-3-1=            15-5-4=            17-7-9=           13-3-5=