4.3+4.3×9.9怎样简便运算
问题描述:
4.3+4.3×9.9怎样简便运算
答
=4.3+4.3(10-0.1)=4.3+43-0.43
答
4.3+4.3·10-4.3·9.9=
答
4.3+4.3×(10-0.1)
=4.3+43-0.43
=47.73