49/5+499/5+4999/5怎样简算?

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49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5怎样简算?49/5+499/5+4999/5=(50-1)/5+(500-1)

49/5+499/5+4999/5怎样简算?
49/5+499/5+4999/5怎样简算?

49/5+499/5+4999/5怎样简算?
49/5+499/5+4999/5
=(50-1)/5+ (500-1)/5+(5000-1)/5
=10+100+1000-1/5-1/5-1/5
=1110-3/5
=1110-0.6
=1109.4