没写的那3题,写在纸上要过程
4个回答
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0.25÷(1-5/9)+3/8
=1/4×4/9+3/8
=1/9+3/8
=35/72
1/4×0.8+1/2÷3/4-0.8
=1/4×4/5+1/2×4/3-0.8
=1/2+2/3-4/5
=11/30
(0.75+1/6)÷11/10÷0.4×5/8
=11/12×10/11×5/2×5/8
=75/96
=1/4×4/9+3/8
=1/9+3/8
=35/72
1/4×0.8+1/2÷3/4-0.8
=1/4×4/5+1/2×4/3-0.8
=1/2+2/3-4/5
=11/30
(0.75+1/6)÷11/10÷0.4×5/8
=11/12×10/11×5/2×5/8
=75/96
追问
还有二题
追答
0.25÷(1-5/9)+3/8
=1/4×9/4+3/8
=9/16+3/8
=15/16
1/4×0.8+1/2÷3/4-0.8
=1/4×4/5+1/2×4/3-0.8
=1/5+2/3-4/5
=1/15
0.75+1/6)÷11/10÷0.4×5/8
=11/12×10/11×5/2×5/8
=125/96
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