问题
填空题
养鸡100只,养鸭80只.鸡的只数是鸭的______%,鸡的只数比鸭多______%;鸭的只数是鸡的______%,鸭的只数比鸡少______%.
答案
①100÷80=125%;
答:鸡的只数是鸭的125%.
②(100-80)÷80,
=20÷80,
=25%;
答:鸡的只数比鸭25%.
③80÷100=80%;
答:鸭的只数是鸡的80%.
④(100-80)÷100,
=20÷100,
=20%;
答:鸭的只数比鸡少20%.