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题型:填空题 题类:常考题 难易度:困难
整十数加、减整十数1047(11题)
67+20=
27+50=
47+30=
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} = {#blank#}4{#/blank#} (个)
{#blank#}5{#/blank#} {#blank#}6{#/blank#} {#blank#}7{#/blank#} = {#blank#}8{#/blank#} (个)
100={#blank#}1{#/blank#}个25
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