五{#blank#}1{#/blank#} 四十五       {#blank#}2{#/blank#} 九二十七            二九{#blank#}3{#/blank#}           七{#blank#}4{#/blank#} 六十三

四九{#blank#}5{#/blank#}             {#blank#}6{#/blank#} 九得九             {#blank#}7{#/blank#} 九五十四       八九{#blank#}8{#/blank#} 

七{#blank#}9{#/blank#} 五十六        {#blank#}10{#/blank#} 九八十一            六{#blank#}11{#/blank#} 四十二       四{#blank#}12{#/blank#} 二十八

{#blank#}1{#/blank#}十二          二四{#blank#}2{#/blank#}       八九{#blank#}3{#/blank#}

{#blank#}4{#/blank#}得九         五{#blank#}5{#/blank#}三十五     三六{#blank#}6{#/blank#}

三五{#blank#}7{#/blank#}           {#blank#}8{#/blank#}得六        {#blank#}9{#/blank#}四十九

例：1个9是(9)，比(10)少(1)．

9个9相加是{#blank#}1{#/blank#}，比{#blank#}2{#/blank#}少{#blank#}3{#/blank#}．

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