数学【人教版】六年级下《成正比例的量》ppt课件-哈语.ppt

/c300 250 200 150 100 50/cm 12 10 8 6 4 2/cm325 252525 2525 2 50 4 100150 6 200 8 . 50225100425150625 () cf ) ( . . () y x ) ( k :yxk() : . /c300 250 200 150 100 50/cm 12 10 8 6 4 2/cm325 252525 2525 2 4 6 8 10 12 14300250200150100500/cm3 /cm23002000/cm3/cm150100502504 6 8 10 12 14 /18021603 2404 3205 4006 4807 560/18021603 2404 3205 4006 4807 560( 1) .( 2) ( 3) 120 .1 2 3 4 5 6 7480400320240160800/ . . r