5×5{#blank#}1{#/blank#}4×6         5×9{#blank#}2{#/blank#}50        3×6{#blank#}3{#/blank#}2×9

6+6=6×{#blank#}1{#/blank#}.

6×3+6={#blank#}2{#/blank#}×{#blank#}3{#/blank#}.

6×5－6={#blank#}4{#/blank#}×{#blank#}5{#/blank#}.

口诀：{#blank#}2{#/blank#}

算式：{#blank#}3{#/blank#} 

2×{#blank#}1{#/blank#}=18      7×{#blank#}2{#/blank#}=21      8×{#blank#}3{#/blank#}=64

4 ×{#blank#}4{#/blank#}=28      6×{#blank#}5{#/blank#}=54      5×{#blank#}6{#/blank#}=35