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题型:填空题 题类:常考题 难易度:容易
万以内加、减法口算 2827 10
1125,2125,3125,,6125,.
{#blank#}1{#/blank#}
684,694,{#blank#}1{#/blank#},{#blank#}2{#/blank#},724,734,{#blank#}3{#/blank#},{#blank#}4{#/blank#}.
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