(只列式,不计算)红花40朵,黄花50朵,
(1)红花是黄花的百分之几?______??
(2)黄花是红花的百分之几?______
(3)红花比黄花少百分之几?______?
(?4)黄花比红花多百分之几?______.
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解:(1)40÷50=80%;
答:红花是黄花的80%.
(2)50÷40=125%;
答:黄花是红花的125%.
(3)(50-40)÷50,
=10÷50,
=20%;
答:红花比黄花少20%.
(?4)(50-40)÷40,
=10÷40,
=25%;
答:黄花比红花多25%.
故