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题型:填空题 题类:常考题 难易度:困难
万以内加、减法口算 2826 10
4997,4998,4999,,,.
5200 {#blank#}1{#/blank#} {#blank#}2{#/blank#} 4600 4400 {#blank#}3{#/blank#}
13,7,11,6,9,5,{#blank#}1{#/blank#},{#blank#}2{#/blank#}
12,16,{#blank#}1{#/blank#},24,{#blank#}2{#/blank#},{#blank#}3{#/blank#},36。
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