2×5{#blank#}1{#/blank#}5＋2             2＋2{#blank#}2{#/blank#}2×2

2×6{#blank#}3{#/blank#}3×4              6－6{#blank#}4{#/blank#}0

4×3{#blank#}5{#/blank#}90－78           34＋2{#blank#}6{#/blank#}64

3×5{#blank#}7{#/blank#}2×9              9×4{#blank#}8{#/blank#}2×8

{#blank#}1{#/blank#}×4=24    20÷{#blank#}2{#/blank#}=5

36÷{#blank#}3{#/blank#}=6    4×{#blank#}4{#/blank#}=16

12÷{#blank#}5{#/blank#}=6    5×{#blank#}6{#/blank#}=20

2×{#blank#}7{#/blank#}=10    25÷{#blank#}8{#/blank#}= 5