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题型：单选题 题类：常考题 难易度：容易
9的乘法口诀1892 10
8×4= 9×7= 2×8= 7×8-8=
8×9= 4×6= 9×8= 2×9+9=
8×2= 4×9= 8×7= 1×8–8=
7×{#blank#}1{#/blank#}＝14 6×{#blank#}2{#/blank#}＝42 8×{#blank#}3{#/blank#}＝56 9×{#blank#}4{#/blank#}＝18
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