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 =

2×□=□×□{#blank#}1{#/blank#}         □×□=□×□{#blank#}2{#/blank#}

三{#blank#}1{#/blank#}十五            四{#blank#}2{#/blank#}十六        三{#blank#}3{#/blank#}十八

五{#blank#}4{#/blank#}三十           {#blank#}5{#/blank#}六得六        {#blank#}6{#/blank#}三得九

1时10分     2×88+8

54-2529     7×8+78×8

92-58-1292-(58-12)