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题型:填空题 题类:常考题 难易度:容易
万以内加、减法口算 2825 10
90+900=
470+80=
7000-700=
120-70=
75-39=
86-40=
60+500=
8×5=
{#blank#}1{#/blank#} + {#blank#}2{#/blank#} = {#blank#}3{#/blank#}
{#blank#}1{#/blank#}
{#blank#}2{#/blank#}
{#blank#}3{#/blank#}
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