能用简算的用简算计:9.81 X 9.8 0.027+9.9X0.27(1)9.81X9.8 =9.81×(10-0.2)=98.1-1.962=96.138(2)0.027+9.9X0.27 =0.027+99×0.027=0.027×(1+99)=0.027×100=2.7

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能用简算的用简算计:9.81X9.80.027+9.9X0.27(1)9.81X9.8=9.81×(10-0.2)=98.1-1.962=96.138(2)0.027+9.9X0.27=0.027+9

能用简算的用简算计:9.81 X 9.8 0.027+9.9X0.27(1)9.81X9.8 =9.81×(10-0.2)=98.1-1.962=96.138(2)0.027+9.9X0.27 =0.027+99×0.027=0.027×(1+99)=0.027×100=2.7
能用简算的用简算计:9.81 X 9.8 0.027+9.9X0.27
(1)9.81X9.8
=9.81×(10-0.2)
=98.1-1.962
=96.138
(2)0.027+9.9X0.27
=0.027+99×0.027
=0.027×(1+99)
=0.027×100
=2.7

能用简算的用简算计:9.81 X 9.8 0.027+9.9X0.27(1)9.81X9.8 =9.81×(10-0.2)=98.1-1.962=96.138(2)0.027+9.9X0.27 =0.027+99×0.027=0.027×(1+99)=0.027×100=2.7
是正确的,你要问什么问题?