0.875-(7/8-1/4)和5/6+(1.3-5/6)要简便计算,
问题描述：
0.875-(7/8-1/4)和5/6+(1.3-5/6)要简便计算,
答
第一个=0.875-（0.875-0.25）
=0.875-0.875+0.25=0.25
第二个=5/6-5/6+1.3=1.3
答
收起
0.875-(7/8-1/4)
=0.875-7/8＋1/4
=1/4
5/6+(1.3-5/6)
=5/6+1.3-5/6
=5/6-5/6＋1.3
=1.3
答
0.875-(7/8-1/4)
=7/8-(7/8-14)
=7/8-7/8+1/4
=1/4
5/6+(1.3-5/6)
=5/6+1.3-5/6
=1.3
明白请采纳,
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