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题型:填空题 题类:常考题 难易度:普通
分数四则混合运算(含分数混合运算及运算律)7649
=
× ÷ = 7× -3÷ = 2.5×0.7×4= × ÷ × =
1- × = 100×(1- )= 1÷ - ÷1= ÷ ÷ =
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