17.8+3.29=
△8-5.86=
36×2.05=
0.2-0.09= 8.5+2.5= 1.36+0.4= 3×0.25=
1-0.45= 0.17+0.3= 0.82-0.22= 1000×0.2=
0×5.16= 9.8+2.6= 502-399=
÷4= × = 20×5=