2×5 =      4 × 6 =       5 ×3 =       8 ×5 = 

5 +5 =       5×5 =        3 × 5=       2 ×9 =

7×4 =      3×6 =         6×5 =        4 ×1=

4× 8 =     7 ×3 =       4 × 4 =       4 + 4 =

45÷5=       35÷7=        25-5=         70-52=

8×8=        400-300=     900+400=     2000+4000=

81÷9=       9×4=         36÷6=        54÷6=

8{#blank#}1{#/blank#}7=15      2{#blank#}2{#/blank#}9=18     42{#blank#}3{#/blank#}7=6

36{#blank#}4{#/blank#}4=9      8{#blank#}5{#/blank#}7=56     90{#blank#}6{#/blank#}9=81