
26+295+2994+29993+299992的简便运算?
展开全部
26+295+2994+29993+299992
=26+300-5+3000-6+30000-7+300000-8
=333300+26-(5+6+7+8)
=333300+26-26
=333300
=26+300-5+3000-6+30000-7+300000-8
=333300+26-(5+6+7+8)
=333300+26-26
=333300
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