求比值:15:1/15;0.2kg:120g.化简:4/5:5/6=;117:78:51=.

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求比值:15:1/15;0.2kg:120g.化简:4/5:5/6=;117:78:51=.
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求比值:15:1/15;0.2kg:120g.化简:4/5:5/6=;117:78:51=.
求比值:15:1/15;0.2kg:120g.化简:4/5:5/6=;117:78:51=.

求比值:15:1/15;0.2kg:120g.化简:4/5:5/6=;117:78:51=.
15:1/15=15÷1/15=15×15=225;
0.2千克:120克=200:120=20/12=5/3≈1.67
4/5:5/6=(4/5×30):(5/6×30)=24:25;
117:78:51=39:26:17(都除以3)

15:1/15=15÷1/15=15×15=225;0.2千克:120克=200:120=20/12=5/3;
4/5:5/6=(4/5×30):(5/6×30)=24:25;
117:78:51=39:26:17(都除以3)