简便计算1/2+1/4+1/8+1/16

分类: 作业答案 • 2022-06-11 15:17:24

问题描述：

答

1/2+1/4+1/8+1/16
=1/2+1/4+1/8+1/16+1/16-1/16
=1/2+1/4+1/8+1/8-1/16
=1/2+1/4+1/4-1/16
=1/2+1/2-1/16
=1-1/16
=15/16

答

1/2 + 1/4 + 1/8 + 1/16
= 1/16 × (8 + 4 + 2 + 1)
= 15/16