3+8= 5+5= 18-8+4= 14-4-3=
6+9= 12-10= 9+1-3= 4+0+6=
4+9= 18-3= 6+8+3= 9-5+4=
(片)
(本)
(个)
9元
5元
8元
3元
1-0.92= - = ×3.2= ÷ ×5=
3.5+4.28= × = ÷ = 99×0.9+0.9=