Question

这道题用简便方法怎么做

19.98×37-199.8×1.9+1998×.82
好难啊 就正确算式

Answer 1

=19.98×37-19.98×19+19.98×82
=19.98x(37-19+82)
=19.98x100
=1998

Answer 2

19.98×37-199.8×1.9+1998×0.82
=19.98×(37-19+82)
=19.98×(119-19)
=19.98×100
=1998

Answer 3

19.98×37-199.8×1.9+1998×0.82
=19.98×(37-19+82)
=19.98×(119-19)
=19.98×100
=1998