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题型:单选题 题类:常考题 难易度:普通
连乘7691
①
②
③
④21×
⑤ ÷8
⑥
⑦
⑧
× {#blank#}1{#/blank#} 9× {#blank#}2{#/blank#} ÷9
{#blank#}3{#/blank#} ÷ 9× {#blank#}4{#/blank#} ×9
÷5= 4.5× = ÷ = × =
×18= ÷ = ÷ = 7.2× =
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