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题型:单选题 题类:常考题 难易度:容易
7的乘法口诀1819 10
4×{#blank#}1{#/blank#}=20
{#blank#}2{#/blank#}×6=18
六九{#blank#}1{#/blank#}
{#blank#}2{#/blank#}
{#blank#}3{#/blank#}
{#blank#}4{#/blank#}
{#blank#}5{#/blank#}
{#blank#}1{#/blank#} {#blank#}2{#/blank#}
{#blank#}3{#/blank#} {#blank#}4{#/blank#}
8×9{#blank#}1{#/blank#}9×9 6×6{#blank#}2{#/blank#}5×7 4×3{#blank#}3{#/blank#}6×2
72-48{#blank#}4{#/blank#}44 5×9{#blank#}5{#/blank#}54 5×1{#blank#}6{#/blank#}5+1
{#blank#}1{#/blank#}×8<57 40>6×{#blank#}2{#/blank#}
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