6<70 -85<8 43->26 39+<48+28
下车多少人?
59-44= 53-20= 36+10=
43-20= 76-26= 15+25=
5×3+9= 6×3-8= 5×6+24=
4×4+12= 34+50-4= 49+1-10=
①29+48=
②76-18=
③60-24=
④80-17+21=
⑤72-22-17=
⑥49+(61-34)=
4+3840+38 83-1783-27
28+3939+45 73-2545