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题型:填空题 题类:常考题 难易度:容易
异分母分数加、减法(不含带分数) 6929
夺红旗:
{#blank#}1{#/blank#} {#blank#}2{#/blank#}
={#blank#}1{#/blank#}
={#blank#}2{#/blank#}
={#blank#}3{#/blank#}
+ = - = - = + =
1- = -0.18= -2= 4.25+ =
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