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=     

{#blank#}1{#/blank#}×{#blank#}2{#/blank#}={#blank#}3{#/blank#}     

{#blank#}4{#/blank#}×{#blank#}5{#/blank#}={#blank#}6{#/blank#}

四{#blank#}1{#/blank#}二十四                                        {#blank#}2{#/blank#}九五十四                                七八{#blank#}3{#/blank#}。

7×4＝                              5×5＝                              9×4＝                            99－26＝

8×5＝                              9×3＝                              4×4＝                            46＋54＝

15＋40＋15＝                                                     80－17－13＝