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题型:填空题 题类:常考题 难易度:容易
整十数加、减整十数1052(11题)
{#blank#}1{#/blank#}+ {#blank#}2{#/blank#}= {#blank#}3{#/blank#}
{#blank#}1{#/blank#} + {#blank#}2{#/blank#} + {#blank#}3{#/blank#} = {#blank#}4{#/blank#}
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