{#blank#}1{#/blank#}

(按从上到下的顺序填写)

瓶柱：2盒有几个瓶柱？4盒呢？8盒呢？

9×{#blank#}1{#/blank#}=45        4×{#blank#}2{#/blank#}=36      {#blank#}3{#/blank#}×9=63

9×{#blank#}4{#/blank#}=9         {#blank#}5{#/blank#}×9=72        5×{#blank#}6{#/blank#}=40

 五八四十

                          
                          
五九四十五
                         
                         

六九{#blank#}1{#/blank#}     {#blank#}2{#/blank#} {#blank#}3{#/blank#}。

五八{#blank#}4{#/blank#}     {#blank#}5{#/blank#} {#blank#}6{#/blank#}。