试题 试卷
题型：填空题 题类：常考题 难易度：普通
9的乘法口诀1861 10
9× ＜50 9× ＋9＜60
6×9{#blank#}1{#/blank#}7×7 50-36{#blank#}2{#/blank#}50-30 8×9{#blank#}3{#/blank#}80-8
5×6= 8×4= 9×3= 7×9= 6×7+8=
82-32= 71-8= 23+6= 42+28= 9×9-30=
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