15
16-=10 10+=12 4+=12
9+=16 17-=13 9-=0
9+=12 5+3=-2 7+<12
+10=15 +7=13-3 10-<6
10
>>>>>
6-1= 2+4= 4+3= 9-4=
2+2= 8-3= 6-5= 2+5=
3-1= 9+0= 2+6= 8-1=
4+4= 3+1= 7-5= 3+6=
34.5+5.34= 340×50=+=
8.7÷0.29= ÷= 48×25%=