3/8*5/6+0.375*5/6 3/2*32*4*1/8 简便算法 着急的
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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
=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
追问
1-7/9÷7/6 还是简算
追答
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
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