54÷6={#blank#}2{#/blank#}，想：六{#blank#}3{#/blank#}五十四，所以商是{#blank#}4{#/blank#}。

54÷9={#blank#}5{#/blank#}，想：{#blank#}6{#/blank#}九五十四，所以商是{#blank#}7{#/blank#}。

{#blank#}1{#/blank#}×3＜28      {#blank#}2{#/blank#}×9＜75     5×{#blank#}3{#/blank#}＜42

{#blank#}4{#/blank#}×6＜45     {#blank#}5{#/blank#}×2＜15      {#blank#}6{#/blank#}×7＜60

{#blank#}1{#/blank#}×5＜36        {#blank#}2{#/blank#}×7＜44

{#blank#}3{#/blank#}×4＜37        {#blank#}4{#/blank#}×8＜26