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3/8*5/6+0.375*5/6 3/2*32*4*1/8 简便算法 着急的

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/10/06 06:37:50
3/8*5/6+0.375*5/6 3/2*32*4*1/8 简便算法 着急的
3/8*5/6+0.375*5/6
=3/8*5/6+3/8*5/6
=3/8*(5/6+5/6)
=3/8*5/3
=5/8
3/2*32*4*1/8
=3/2*2*16*4*1/8
=3/2*16*8*1/8
=3/2*16
=3/2*2*8
=3*8
=24
再问: 1-7/9÷7/6 还是简算
再答: 3/2*32*4*1/8 =3/2*2*8*2*4*1/8 =3/2*2*8*8*1/8 =3*8*1 =24 1-7/9÷7/6 =1-7/9*6/7 =1-2/3 =1/3