5×5{#blank#}1{#/blank#}4×6         5×9{#blank#}2{#/blank#}50        3×6{#blank#}3{#/blank#}2×9

4{#blank#}1{#/blank#}5= 20          3{#blank#}2{#/blank#}5 = 8         19{#blank#}3{#/blank#}4 =3{#blank#}4{#/blank#}5

20{#blank#}5{#/blank#}10 = 10       2{#blank#}6{#/blank#}5＜10       5{#blank#}7{#/blank#}3＞12

4×6=            5×3=           24+60=          17-5=

7+5=            2×6=           41-2=             3×2=

2×4-2=            5×1+5=         4×6-10=          3×6-7=