0.45×18用第等式简便运算
问题描述:
0.45×18用第等式简便运算
答
0.45×18
=0.45×2x9
=0.9x9
=8.1
0.45×18用第等式简便运算
0.45×18
=0.45×2x9
=0.9x9
=8.1