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题型:综合题 题类:常考题 难易度:普通
一、分数加减法 第二课时折纸②
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={#blank#}2{#/blank#}
={#blank#}3{#/blank#}
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}
{#blank#}4{#/blank#} {#blank#}5{#/blank#} {#blank#}6{#/blank#}
+ = + = - = - =
- = - = + = - =
- = 1- = + = + =
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