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题型:填空题 题类:常考题 难易度:容易
一年级 1~~5的减法129
= =
{#blank#}1{#/blank#}-{#blank#}2{#/blank#}={#blank#}3{#/blank#}
① {#blank#}1{#/blank#}
② {#blank#}2{#/blank#}
③ {#blank#}3{#/blank#}
④ {#blank#}4{#/blank#}
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