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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1057(9题)
{#blank#}1{#/blank#} - {#blank#}2{#/blank#} = {#blank#}3{#/blank#} (盆)
{#blank#}1{#/blank#} - {#blank#}2{#/blank#} = {#blank#}3{#/blank#}
114+7 15-79+2 80-2090-20
12-64+6 5056-6 76-667-7
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