2×{#blank#}2{#/blank#}=12

{#blank#}3{#/blank#}×1=4

的只数是 的6倍．

有{#blank#}1{#/blank#}只．

{#blank#}2{#/blank#}×{#blank#}3{#/blank#}={#blank#}4{#/blank#}(只)

2×4{#blank#}1{#/blank#}45÷9     25{#blank#}2{#/blank#}4×7           25÷5{#blank#}3{#/blank#}5×1

72÷9{#blank#}4{#/blank#}6         63÷7{#blank#}5{#/blank#}3×3       54÷9{#blank#}6{#/blank#}2×4

6×5=          6×8=       7×8 =       6×9=

5×6=          8×6=       8×7=       9×6=

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

4×5{#blank#}4{#/blank#}31－10                            2×2{#blank#}5{#/blank#}2＋2                 6×3{#blank#}6{#/blank#}6＋6＋6