9.81*0.1+0.5*9.81+0.049*981=?怎样简算

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9.81*0.1+0.5*9.81+0.049*981=?怎样简算
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9.81*0.1+0.5*9.81+0.049*981=?怎样简算
9.81*0.1+0.5*9.81+0.049*981=?
怎样简算

9.81*0.1+0.5*9.81+0.049*981=?怎样简算
9.81*0.1+0.5*9.81+0.049*981
=9.81*0.1+9.81*0.5+9.81*4.9
=9.81*(0.1+0.5+4.9)
=9.81*5.5
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超级怀疑第二个应该是0.5*98.1

9.81*(0.1+0.5+4.9)

9.81*(0.1+0.5+4.9)