
求26+295+2994+29993+299992+2999991的简便运算
2个回答
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26+295+2994+29993+299992+2999991
=26+300-5+3000-6+30000-7+300000-8+3000000-9
=3333300+26-(5+6+7+8+9)
=3333300+26-7X5
=3333300-(35-26)
=3333300-9
=3333291
=26+300-5+3000-6+30000-7+300000-8+3000000-9
=3333300+26-(5+6+7+8+9)
=3333300+26-7X5
=3333300-(35-26)
=3333300-9
=3333291
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