(68-17⼀18)×1⼀17 (1-3⼀4)×8⼀15+5⼀6 计算能简便的简便

2024-10-31 16:41:59
推荐回答(3个)
回答(1):

(68-17/18)×1/17
=68×1/17-17/18×1/17
=4-1/18
=3又17/18

(1-3/4)×8/15+5/6

=1×8/15-3/4×8/15-5/6
=8/15-2/5-5/6
=16/30-12/30-25/30
=-21/30
=-7/10

回答(2):

(68-17/18)×1/17
=68×1/17-17/18×1/17
=4-1/18
=3又17/18

(1-3/4)×8/15+5/6

=1/4×8/15+5/6
=2/15+5/6
=87/90

回答(3):

(68-17/18)×1/17
=68×1/17-17/18×1/17
=4-1/18
=1×8/15-3/4×8/15-5/6
=8/15-2/5-5/6
=16/30-12/30-25/30
=-21/30
=-7/10
=3又17/18