简便方法计算;5/8+3/8-5/8+3/8= 4.28+(5.72-3.99)= 1/7* (42+7/11)8.1*1/6+8.1*5/6= 1/2*1/3除1/2*1/3=
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![简便方法计算;5/8+3/8-5/8+3/8= 4.28+(5.72-3.99)= 1/7* (42+7/11)8.1*1/6+8.1*5/6= 1/2*1/3除1/2*1/3=](/uploads/image/z/32522-50-2.jpg?t=%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%9B5%2F8%2B3%2F8-5%2F8%2B3%2F8%3D+4.28%2B%285.72-3.99%29%3D+1%2F7%2A+%2842%2B7%2F11%298.1%2A1%2F6%2B8.1%2A5%2F6%3D+1%2F2%2A1%2F3%E9%99%A41%2F2%2A1%2F3%3D)
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简便方法计算;5/8+3/8-5/8+3/8= 4.28+(5.72-3.99)= 1/7* (42+7/11)8.1*1/6+8.1*5/6= 1/2*1/3除1/2*1/3=
简便方法计算;5/8+3/8-5/8+3/8= 4.28+(5.72-3.99)= 1/7* (42+7/11)8.1*1/6+8.1*5/6= 1/2*1/3除1/2*1/3=
简便方法计算;5/8+3/8-5/8+3/8= 4.28+(5.72-3.99)= 1/7* (42+7/11)8.1*1/6+8.1*5/6= 1/2*1/3除1/2*1/3=
计算;
5/8+3/8-5/8+3/8= (5/8-5/8)+(3/8+3/8)=3/4
4.28+(5.72-3.99)= 4.28+5.72-3.99=10-3.99=6.01
1/7* (42+7/11)=1/7×42+1/7×7/11=6+1/11=6 1/11
8.1*1/6+8.1*5/6=8.1(1/6 +5/6)=8.1
1/2*1/3除1/2*1/3=1/3×1/3=1/9