已知1.990=1.411,19.90=4.461,那么1990=_.

问题描述:

已知

1.990
=1.411,
19.90
=4.461,那么
1990
=______.

1990
=
19.90×100
=
19.90
×
100

∴原式=
19.90
×
100
=4.461×10=44.61.
故答案为:44.61.