3/2除以1/4乘以4/15除以16 8/9除以(1/4+5/6乘以3/5) =
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3/2除以1/4乘以4/15除以16 8/9除以(1/4+5/6乘以3/5) =
3/2除以1/4乘以4/15除以16 8/9除以(1/4+5/6乘以3/5)
= =
=
8除以[(2/3-1/5)乘以3/14]
(1/3+1/4-1/6)乘以24 =
=
=5/38除以15/19+3/4乘以5/6 5/6-5/14除以20/21-1/8
=
3/2除以1/4乘以4/15除以16 8/9除以(1/4+5/6乘以3/5)
= =
=
8除以[(2/3-1/5)乘以3/14]
(1/3+1/4-1/6)乘以24 =
=
=5/38除以15/19+3/4乘以5/6 5/6-5/14除以20/21-1/8
=
【1】 3/2 ÷ 1/4 × 4/15 ÷16
=( 3/2 × 4/15 )÷ ( 1/4 × 16)
= 2/5 ÷4
= 1/10
【2】8/9 ÷( 1/4 + 5/6 × 3/5 )
= 8/9 ÷ ( 1/4 + 1/2 )
= 8/9 × 4/3
= 32/27
【3】8÷ [( 2/3 - 1/5 )× 3/14]
=8÷ [ 2/3 × 3/4 - 1/5 × 3/14 ]
=8÷ [ 1/2 - 15/70 ]
=8÷ 2/7
=28
【4】( 1/3 + 1/4 - 1/6 )×24
= 1/3 × 24+ 1/4 × 24 - 1/6 × 24
= 8+6-4
=10
【5】5/38 ÷ 15/19 + 3/4 × 5/6
= 5/38 × 19/15 + 3/4 × 5/6【约分】
= 1/6 + 5/8
= 19/24
【6】5/6 - 5/14 ÷ 20/21 - 1/8
= 5/6 - 5/14 × 21/20 - 1/8
= 5/6 - 3/8 - 1/8
= 5/6 -( 3/8 + 1/8 )
= 5/6 - 1/2
= 1/3
希望能帮助到你^_^
=( 3/2 × 4/15 )÷ ( 1/4 × 16)
= 2/5 ÷4
= 1/10
【2】8/9 ÷( 1/4 + 5/6 × 3/5 )
= 8/9 ÷ ( 1/4 + 1/2 )
= 8/9 × 4/3
= 32/27
【3】8÷ [( 2/3 - 1/5 )× 3/14]
=8÷ [ 2/3 × 3/4 - 1/5 × 3/14 ]
=8÷ [ 1/2 - 15/70 ]
=8÷ 2/7
=28
【4】( 1/3 + 1/4 - 1/6 )×24
= 1/3 × 24+ 1/4 × 24 - 1/6 × 24
= 8+6-4
=10
【5】5/38 ÷ 15/19 + 3/4 × 5/6
= 5/38 × 19/15 + 3/4 × 5/6【约分】
= 1/6 + 5/8
= 19/24
【6】5/6 - 5/14 ÷ 20/21 - 1/8
= 5/6 - 5/14 × 21/20 - 1/8
= 5/6 - 3/8 - 1/8
= 5/6 -( 3/8 + 1/8 )
= 5/6 - 1/2
= 1/3
希望能帮助到你^_^
3/2除以1/4乘以4/15除以16 8/9除以(1/4+5/6乘以3/5) =
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