试题 试卷
题型：填空题 题类：常考题 难易度：容易
9的乘法口诀1876 10
2×{#blank#}1{#/blank#} =14 {#blank#}2{#/blank#}×5=40
5×{#blank#}3{#/blank#} =15 {#blank#}4{#/blank#}×1=4
2×9={#blank#}2{#/blank#}×3
{#blank#}1{#/blank#}
试题篮
{#blank#}1{#/blank#}