直接写出得数.0.75+0.4= 20+0.78= 4.8+4.2= 5.7﹣3=4.9﹣1.9= 1.34+0.8= 2﹣0.75= 8.7+0.03=0.2﹣0.09= 8.5+2.5= 1.6+0.4= 4.5+2.5=1﹣0.45= 100+0.9= 0.17+0.3= 0.82﹣0.22=
6-3= 5-3= 6-6= 8-1= 9-1= 10-4=
8-4= 9-5= 5-5= 3-3= 7-7= 8-7=
9-4= 8-2= 9-7= 4-4= 10-5= 4-2=
8-5= 10-3= 9-3= 10-7= 7-5= 6-4=
7-4= 6-0= 5-2= 10-9= 10-8= 8-2=