4.3×101-43用什么简便方法做

Question

4.3×101-43用什么简便方法做

Answer 1

   4.3*101-43

=4.3*101-4.3*10

=4.3*（101-10）

=4.3*91

=391.3

或者 

   4.3*101-43

=4.3*（100+1）-43

=4.3*100+4.3-43

=430+4.3-43

=391.3

Answer 2

你确定不是 43x101-43
4.3x101-43
=4.3x（100+1）-43
=430+4.3-43
=434.3-43
=391.3

Answer 3

4.3X101-43
=4.3X100-4.3X1-43
=430-43-4.3
=430-47.3
=430-50+2.7
=382.7