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题型:填空题 题类:常考题 难易度:困难
万以内笔算加法(不含连加) 2510 10
400+{#blank#}1{#/blank#}=620 {#blank#}2{#/blank#}+70=430 660+{#blank#}3{#/blank#}=900
530-{#blank#}4{#/blank#}=210 {#blank#}5{#/blank#}-350=640 840-{#blank#}6{#/blank#}=480
172+364= 403-87=
795+873= *850-742=
*342+188= 800-238=
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