54÷6=
67÷9=
36÷5=
23÷4=
34÷5=
8×3=
30÷6=
34-20=
50+23=
6+2×3=
72÷( )=9
( )÷5=2
7×( )=35
90+50= 39+58= 61-38= 9000-2000=
27+63= 130-40= 80-27= 600+800=
86-44= 520-500= 200+800= 1200-600=