用简便方法计算10.1-2.23和1.004-0.796
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![用简便方法计算10.1-2.23和1.004-0.796](/uploads/image/z/241381-37-1.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%9710.1-2.23%E5%92%8C1.004-0.796)
用简便方法计算10.1-2.23和1.004-0.796
用简便方法计算10.1-2.23和1.004-0.796
用简便方法计算10.1-2.23和1.004-0.796
10.1-2.23
=10+0.1-2.23
=10-2.23+0.1
=7.77+0.1
=7.87
1.004-0.796
=(1+0.004)-(0.8-0.004)
=1+0.004-0.8+0.004
=1-0.8+0.004+0.004
=0.2+0.008
=0.208