33.7*121+337*42.2+337*54.3的简便方法
问题描述:
33.7*121+337*42.2+337*54.3的简便方法
答
33.7*121+337*42.2+337*54.3
=337x12.1+337*42.2+337*54.3
=337x(12.1+42.2+54.3)
=337x108.6
=36598.2