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题型:单选题 题类:常考题 难易度:普通
万以内笔算加法(不含连加) 2513 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
+ = + = ﹣ = 1﹣ =
+ = 700×4= 62﹣36= 700+300=
123×2= 486+14=
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