试题 试卷
题型:解决问题 题类:常考题 难易度:普通
异分母分数加、减法(不含带分数) 6921
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+ = - = - = 2 + =
0.6+ = + = 1- - = + - =
170﹣90=
0.46+0.4=
0.56÷0.8=
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