26+23=      45+9=       78-45=       4×3－3=     

5×4=           3×5=        2×6=        2×4＋3=     

6×3=            2×2=        4×4=        5×5－1=     

7×6{#blank#}1{#/blank#}40     2×3{#blank#}2{#/blank#}5

二四{#blank#}1{#/blank#}       八九{#blank#}2{#/blank#}      四{#blank#}3{#/blank#}二十

4×{#blank#}1{#/blank#}＜33      7×{#blank#}2{#/blank#}＜55     28＞{#blank#}3{#/blank#}×3    55＞{#blank#}4{#/blank#}×9

三{#blank#}1{#/blank#}十五            四{#blank#}2{#/blank#}十六        三{#blank#}3{#/blank#}十八

五{#blank#}4{#/blank#}三十           {#blank#}5{#/blank#}六得六        {#blank#}6{#/blank#}三得九