1⼀4 1⼀8 1⼀16 1⼀32 1⼀64 1⼀128用简便方法计算

1/4+1/8+1/16+1/12+1/64+1/128脱式计算用简便方法
2024-11-30 08:26:06
推荐回答(3个)
回答1:


把后一个分数换成两个分数相减

回答2:

原式=1/128+1/64+1/32+1/16+1/8+1/4

=(1+2+4+8+16+32)x1/128
=63/128

回答3:

=1/4+1/4-1/8+1/8-4 1/6+1/4-1/32+1/32+1/64+1/64-1/128
=1/2-1/128
=63/128