14÷7={#blank#}1{#/blank#}

口诀：{#blank#}2{#/blank#}

{#blank#}1{#/blank#}×8<40              6×{#blank#}2{#/blank#}<40            27>3×{#blank#}3{#/blank#}

{#blank#}4{#/blank#}×9<81              5×{#blank#}5{#/blank#}<35            28>7×{#blank#}6{#/blank#}

10{#blank#}1{#/blank#}3=7               42{#blank#}2{#/blank#}7=6

25{#blank#}3{#/blank#}5=30             7{#blank#}4{#/blank#}8= 56

32{#blank#}5{#/blank#}4=8                19{#blank#}6{#/blank#}9= 28

12{#blank#}7{#/blank#}8=4                5{#blank#}8{#/blank#}6=30