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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165
3-=2
+ =2 - =3
={#blank#}1{#/blank#} ={#blank#}2{#/blank#}
5-4=
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}
{#blank#}4{#/blank#} {#blank#}5{#/blank#}
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