试题 试卷
题型：连线题 题类：常考题 难易度：容易
9的乘法口诀1870 10
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9×{#blank#}1{#/blank#}＜60 {#blank#}2{#/blank#}×7＜36 {#blank#}3{#/blank#}×6＜22
试题篮
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