8×{#blank#}1{#/blank#}= 64         {#blank#}2{#/blank#}× 7  = 21         8×{#blank#}3{#/blank#}= 72

{#blank#}4{#/blank#}×4  = 36        7×{#blank#}5{#/blank#}= 42       　  {#blank#}6{#/blank#}×9= 45

6×7=            81÷9=        7×5=           3×9=          28÷4=

63÷7=           8×9=         36÷9=          54÷9=         5×6=

9÷9=            24÷8=        9×5=           6×9=           8×8=

5×9+9=         8×6-8=        7×8-7=        6×5-6=

4×{#blank#}1{#/blank#}<36    5×{#blank#}2{#/blank#}<23    {#blank#}3{#/blank#}×8<58

{#blank#}4{#/blank#}×9<60    26>{#blank#}5{#/blank#}×4    50>8×{#blank#}6{#/blank#}