2×9＝{#blank#}1{#/blank#}  9×5＝{#blank#}2{#/blank#}    3×6＝{#blank#}3{#/blank#}    2×6＝{#blank#}4{#/blank#}

1×1＝{#blank#}5{#/blank#}    5×0＝{#blank#}6{#/blank#}      2×2＝{#blank#}7{#/blank#}     3×2＝{#blank#}8{#/blank#}

5×{#blank#}1{#/blank#}＝15

5×{#blank#}2{#/blank#}＝45

5×{#blank#}3{#/blank#}＝35

5×5=                             3×2=                                  6×6=

2×2=                             4×5=                                  1×4=

7×3=                            4×7=                                  4×4=

28÷4=                           35÷5=                                42÷7=

56÷8=                           36÷9=                                21÷3=

加法：{#blank#}1{#/blank#}。

乘法：{#blank#}2{#/blank#}。

加法：{#blank#}3{#/blank#}。

乘法：{#blank#}4{#/blank#}。