Question

2.73×99简便运算。

Answer 1

2.73×99
=2.73×（100-1)
=2.73x100-2.73×1
=273-2.73。
270.27

Answer 2

2.73x(100-1)
2.73x100-2.73
2.73-2.73
0

Answer 3

2.73×99
＝2.73×（100-1）
＝2.73×100-2.73×1
＝273-2.73
＝270.27

Answer 4

2.73×99
=2.73×(100-1)
=2.73×100-2.73
=273-2.73
=270.27

Answer 5

=2.73X（100-1）=2.73X1O0-2.73X1=273-2.73=270.27