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题型：填空题 题类：常考题 难易度：容易
用9的乘法口诀求商1992 10
8×{#blank#}1{#/blank#}= 64 {#blank#}2{#/blank#}× 7 = 21 8×{#blank#}3{#/blank#}= 72
{#blank#}4{#/blank#}×4 = 36 7×{#blank#}5{#/blank#}= 42 {#blank#}6{#/blank#}×9= 45
5÷5{#blank#}1{#/blank#}5＋5
12－4{#blank#}2{#/blank#}12÷4
7×3{#blank#}3{#/blank#}28－7
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