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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1893 10
{#blank#}1{#/blank#}×{#blank#}2{#/blank#}+{#blank#}3{#/blank#}={#blank#}4{#/blank#} 或{#blank#}5{#/blank#}×{#blank#}6{#/blank#}－{#blank#}7{#/blank#}={#blank#}8{#/blank#}
30-15+9{#blank#}1{#/blank#}6×3+6 67-29-12{#blank#}2{#/blank#}67-(29-12)
4×(54÷6){#blank#}3{#/blank#}18+8×2 5+35÷5{#blank#}4{#/blank#}(25+7)÷4
4×9÷6{#blank#}5{#/blank#}72÷9×2 7×9-18{#blank#}6{#/blank#}8×8-19
8×8-8= 6×7+7= 6×9-9= 7×5-12=
8×7+6= 9×8-3= 6×5+20= 7×5+30=
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