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题型:填空题 题类:常考题 难易度:普通
7的乘法口诀1817 10
{#blank#}1{#/blank#}×{#blank#}2{#/blank#}=12 {#blank#}3{#/blank#}×{#blank#}4{#/blank#}=12
{#blank#}1{#/blank#}×6=30
{#blank#}2{#/blank#}×4=28
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