18÷3={#blank#}5{#/blank#}   4×2={#blank#}6{#/blank#}      15÷5＝{#blank#}7{#/blank#}   4×4={#blank#}8{#/blank#}

2×2={#blank#}9{#/blank#}    20÷4={#blank#}10{#/blank#}    6×4={#blank#}11{#/blank#}    9÷3={#blank#}12{#/blank#}

5×2＋9={#blank#}13{#/blank#} 3×4－5={#blank#}14{#/blank#}  5×5＋3={#blank#}15{#/blank#}  6×5－6={#blank#}16{#/blank#}

{#blank#}1{#/blank#}个{#blank#}2{#/blank#}是{#blank#}3{#/blank#}．

算式：{#blank#}4{#/blank#}×{#blank#}5{#/blank#}={#blank#}6{#/blank#}

2×7 =        1×6=       2×5 =       3×2 =

2×4 =        8×1 =      8×2 =        2×9 =

7 ×2=        2× 2 =       5×1=        1×7 =