口算.0.5+0.6= 1﹣0.05= 5.5﹣0.5= 0.96﹣0.8=2.4+0.61= 3.4+5= 6﹣0.9= 0.46+0.54=
5-3= 7-2= 9-1= 7-1= 8-5= 6-3=
6-5= 7-4= 7-6 = 10-8= 10-3= 5-3=
8-2= 8-6= 8-5= 8-3= 5-4= 5-1=
10-3= 10-2= 5-2= 7-3= 6-4= 8-4=
5-5= 6-1= 7-3= 8-5= 4-2= 9-7=