Question

甲、乙兩數(shù)的比是5：8，甲數(shù)是乙數(shù)的________%，甲數(shù)比乙數(shù)少________%

Answer 1

62.5    37.5
分析：甲、乙兩數(shù)的比是5：8，甲數(shù)看成5份，那么乙數(shù)就是8份，用甲數(shù)除以乙數(shù)就是甲數(shù)是乙數(shù)的百分之幾；甲數(shù)比乙數(shù)少8-5=3份，用3份除以8份就是甲數(shù)比乙數(shù)少百分之幾．
解答：設(shè)甲數(shù)是5份，乙數(shù)就是8份；
5÷8=62.5%；
（8-5）÷8，
=3÷8，
=37.5%．
答：甲數(shù)是乙數(shù)的62.5%，甲數(shù)比乙數(shù)少37.5%．
故答案為：62.5，37.5．
點(diǎn)評(píng)：本題是求一個(gè)數(shù)是另一個(gè)數(shù)的百分之幾，關(guān)鍵是看把誰(shuí)當(dāng)成了單位“1”，單位“1”的量為除數(shù)．