42÷7=
9×5=
20+30﹣5=
2×9+3=
35÷5=
72÷8=
36+5﹣10=
8×3﹣15=
8×6 =
40÷8=
98-59 =
63÷9=
56÷7=
30÷5=
7000 +600 =
160 +40 =
4000-900 =
4300-3000 =
650 + 80 =
300 + 900 =
( )+( )=( )+( )=( )+( )