128*73/127+2.6 怎样简算?绝不会少······
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128*73/127+2.6怎样简算?绝不会少······128*73/127+2.6怎样简算?绝不会少······128*73/127+2.6怎样简算?绝不会少······≈(127+1)*73/1
128*73/127+2.6 怎样简算?绝不会少······
128*73/127+2.6 怎样简算?
绝不会少······
128*73/127+2.6 怎样简算?绝不会少······
≈(127+1)*73/127+2.6
=73+73/127+2.6
=75.6+73/127
≈75.6+(63.5+9.5)/73
=75.6+0.5+9.5/73
=76.1+9.5/73
≈76.1
如果再细点
76.1+9.5/73
≈76.1+(7.3+2.3)/73
=76.1+0.1+2.3/73
≈76.2
128/127为1 1*73为73 73+2.6=75.6