32×5={#blank#}1{#/blank#}    12×50 ={#blank#}2{#/blank#}   24×5={#blank#}3{#/blank#}    25×40 ={#blank#}4{#/blank#}    40×70={#blank#}5{#/blank#}

150×4={#blank#}6{#/blank#}    6×60={#blank#}7{#/blank#}    16×40={#blank#}8{#/blank#}   80×60={#blank#}9{#/blank#}    18×3={#blank#}10{#/blank#}

{#blank#}1{#/blank#}×3＝90    {#blank#}2{#/blank#}×8＝4800   {#blank#}3{#/blank#}×5＝1000

{#blank#}4{#/blank#}÷3＝90   {#blank#}5{#/blank#}÷8＝40  {#blank#}6{#/blank#}÷4＝20

①*509-238=

②*704+198=

③450×8=

④208×3=

⑤127×5=

⑥329+174+204=

15.6元-3.9元=         6×420=            243×4=          305×7=