36亿3060000000 248÷319 138×4747×138
4078960047008906 150×426000 12×(24+48)÷24 12×24+48÷24
50+950= 300﹣201= 45×8= 105÷3=
1﹣= ﹣= 15÷= ×=
12.12﹣12= 2.5×6= 100÷50%= 0.3×0.6=
÷3= 1+40%=
:8= 0.62= 0.8×0.25= 10-0.01= ( )×0.4=1