甲数是30,乙数是20,乙数是甲数的( )( ),甲数比乙数多_%,乙数比甲数少_%.
问题描述:
甲数是30,乙数是20,乙数是甲数的
,甲数比乙数多______%,乙数比甲数少______%. ( ) ( )
答
①20÷30=
2 3
答:乙数是甲数的
.2 3
②(30-20)÷20
=10÷20
=0.5
=50%
答:甲数比乙数多50%.
③(30-20)÷30
=10÷30
≈0.333
=33.3%
答:乙数比甲数少33.3%.