Question

学霸，请用简便方法计算

Answer 1

（200-2）×0.51
=102-1.02
=101.98

Answer 2

=0.51×（200-2）
=0.51×200-2×0.51
=101-1.01
=99.99

Answer 3

198×0.51=（200-2）×0.51=200×0.51-2×0.51=102-1.02=100.98

Answer 4

198*(0.5+0.01)=99+1.98=100.98

Answer 5

100，98