直接写出得数2.7+2.2= 6.9﹣6= 0.59﹣0.9= 0.7﹣0.7= 0.2+0.8=4﹣1.76= 1﹣0.09= 9.5+11= 6.8﹣6= 4.8+5.2=
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=
算一算。3+3= 5+2= 3+6= 0+7= 4+6= 3+4=4+5= 8+2= 5+5=