甲数是乙数的4/5,甲数是乙数的_%;乙数是甲数的_%,甲数是甲乙两数和的_%.

问题描述:

甲数是乙数的

4
5
,甲数是乙数的______%;乙数是甲数的______%,甲数是甲乙两数和的______%.

设甲数为4,乙数为5,
4÷5=0.8=80%,
5÷4=1.25=125%,
4÷(4+5),
=4÷9,
≈0.444,
=44.4%,
故答案为:80,125.44.4.