19.64-4.98简便计算
问题描述:
19.64-4.98简便计算
答
19.64-4.98
=19.64-5+0.02
=14.64+0.02
=14.66
19.64-4.98简便计算
19.64-4.98
=19.64-5+0.02
=14.64+0.02
=14.66