来自何存富的问题
时间单位转换一写初二上学期的时间单位转换要用科学记数法的用科学记数法(1)2min=__________=____h(2)2h=__________=____min2h=__________=____s(3)30min=__________=____h30min=__________=____s(4)45min=__________=____h(5)120s=
时间单位转换
一写初二上学期的时间单位转换要用科学记数法的用科学记数法
(1)2min=__________=____h
(2)2h=__________=____min
2h=__________=____s
(3)30min=__________=____h
30min=__________=____s
(4)45min=__________=____h
(5)120s=__________=____min
120s=__________=____h
(6)1800s=__________=____h
