问题
填空题
12千克比15千克少______%.20吨增加______%后是25吨.
答案
(1)(15-12)÷15,
=3÷15,
=20%;
(2)(25-20)÷20,
=5÷20,
=25%;
故答案为:20,25.
12千克比15千克少______%.20吨增加______%后是25吨.
(1)(15-12)÷15,
=3÷15,
=20%;
(2)(25-20)÷20,
=5÷20,
=25%;
故答案为:20,25.