3×7={#blank#}1{#/blank#}

3×4={#blank#}1{#/blank#}     5×8={#blank#}2{#/blank#}          6×7={#blank#}3{#/blank#}

9×3={#blank#}4{#/blank#}     7×9={#blank#}5{#/blank#}          2×4={#blank#}6{#/blank#}

3×8={#blank#}7{#/blank#}     5×5={#blank#}8{#/blank#}          6×8={#blank#}9{#/blank#}

4×5={#blank#}10{#/blank#}     6×2={#blank#}11{#/blank#}          3×7={#blank#}12{#/blank#}

6×{#blank#}1{#/blank#}<21    7×{#blank#}2{#/blank#}<49       4×{#blank#}3{#/blank#}<27

3×{#blank#}4{#/blank#}<14     5×{#blank#}5{#/blank#}<44         6×{#blank#}6{#/blank#}<32

6×3＝                      2×1＝                       14＋8＝                      4×6＝

3×7＝                      5×9＝                       3×8＝                         74－20＝