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题型:填空题 题类:常考题 难易度:容易
万以内数的认识(复习)2790 10
4725,4825,,,5125.
87 85 83 {#blank#}1{#/blank#} {#blank#}2{#/blank#}
9876,8765,7654,{#blank#}1{#/blank#},{#blank#}2{#/blank#},{#blank#}3{#/blank#}3210.
7×9=63
77×9=693
777×9=6993
7777×9={#blank#}1{#/blank#}.
4,1, , {#blank#}1{#/blank#}, , {#blank#}2{#/blank#}。
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