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题型:填空题 题类:常考题 难易度:容易
两位数加、减两位数(竖式:含不进、进、不退、退)(复习) 2048 10
{#blank#}1{#/blank#} - {#blank#}2{#/blank#} = {#blank#}3{#/blank#}
40+30= 78-6= 42+5= 6+53=
53+40= 39-20= 7+42= 69-8=
57-6= 88-40= 31+(46-40)= 57-30-7=
25+20-13= 62-12+21= 35+2+30= 8-(27-20)=
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