a )
4854-1022×3-123:3=
4854-3066-41=
1788-41=1747
b )
6050:5×2-4204:4-1023=
1210×2-1051-1023=
2420-1051-1023=
1369-1023=346
c)
4702×2-1680:7×2+1267=
9404-240×2+1267=
9404-480+1267=
8924+1267=10191
d)
6390:9×2-1503:3+128:4=
710×2-501+32=
1420-501+32=
919+32=951
