试题 试卷
题型：单选题 题类：常考题 难易度：容易
9的乘法口诀1893 10
6×9{#blank#}1{#/blank#}7×7 50-36{#blank#}2{#/blank#}50-30 8×9{#blank#}3{#/blank#}80-8
4×{#blank#}1{#/blank#}＜33 7×{#blank#}2{#/blank#}＜55 28＞{#blank#}3{#/blank#}×3 55＞{#blank#}4{#/blank#}×9
试题篮
