请展开查看知识点列表
6-1 = 25%×24= 4.3+5.07= 0.9×9+0.9=
6÷ = 0.34÷10%= 25%+ = × ÷ × =
0.77+1.23= 20×70%= 70÷50%=
45÷90%= 200×(1﹣40%)= 15×60%=
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