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题型:填空题 题类:常考题 难易度:困难
万以内加、减法口算 2826 10
4997,4998,4999,,,.
67,68,{#blank#}1{#/blank#},{#blank#}2{#/blank#},{#blank#}3{#/blank#},72,{#blank#}4{#/blank#}
44,46,48,{#blank#}5{#/blank#},{#blank#}6{#/blank#},{#blank#}7{#/blank#},56
{#blank#}8{#/blank#},{#blank#}9{#/blank#},65,55,45,{#blank#}10{#/blank#}。
50,45,40,35,{#blank#}1{#/blank#}、{#blank#}2{#/blank#}、{#blank#}3{#/blank#}
860,880,{#blank#}1{#/blank#},{#blank#}2{#/blank#},940,{#blank#}3{#/blank#}.
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