①

1×9={#blank#}1{#/blank#}

②

2×9={#blank#}2{#/blank#}

③

3×9={#blank#}3{#/blank#}

6{#blank#}1{#/blank#}7=13     8{#blank#}2{#/blank#}6=48      35{#blank#}3{#/blank#}5=7     48{#blank#}4{#/blank#}8=40

12{#blank#}5{#/blank#}3=4     9{#blank#}6{#/blank#}5=45      27{#blank#}7{#/blank#}9=3     54{#blank#}8{#/blank#}6=9

9×9=    2×5=    7×6=    8×8-8=

3×5=    4×8=    2×6=    4×2+23=

 18＋20＝    5×4＝    30＋60＝    9×6＝    52－5＝ 

 42＋38＝    7×7＝    2×9＝      4×8＝    7×6＝ 

 64－60＝    8×3＝    5×5＝      3×2＝    37－9＝