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题型:填空题 题类:常考题 难易度:容易
一年级 1~~5的减法157
+ =2 + =5 + =
={#blank#}1{#/blank#} ={#blank#}2{#/blank#} ={#blank#}3{#/blank#}
{#blank#}1{#/blank#}
{#blank#}2{#/blank#}
{#blank#}3{#/blank#}
{#blank#}4{#/blank#}
可以取{#blank#}1{#/blank#}和{#blank#}2{#/blank#},也可以取{#blank#}3{#/blank#}和{#blank#}4{#/blank#}。(填序号)
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