计算125x0.2-00.4125+41.25x0.09的简便运算?
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125x0.2-0.4125+41.25x0.09简便运算:
125x0.2-0.4125+41.25x0.09
=25-0.4125+0.4125x9
=25-0.4125x(1-9)
=25+0.4125x8
=25+3.3
=28.3
125x0.2-0.4125+41.25x0.09
=25-0.4125+0.4125x9
=25-0.4125x(1-9)
=25+0.4125x8
=25+3.3
=28.3
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