3个回答
2016-07-19
展开全部
用简便方法计祘8.76×9.9+18.76
=8.76x(9.9+1)+10
=8.76x11-8.76x0.1+10
=87.6+8.76-0.876+10
=96.36+10-0.876
=106.36-1+0.124
=105.484
=8.76x(9.9+1)+10
=8.76x11-8.76x0.1+10
=87.6+8.76-0.876+10
=96.36+10-0.876
=106.36-1+0.124
=105.484
展开全部
8.76x9.9+18.76
=8.76x(10-0.1)+18.76
=8.76x10-8.76x0.1+18.76
=87.6+18.76-0.876
=106.36-(1-0.124)
=106.36-1+0.124
=105.36+0.124
=105.484
谢谢,请采纳
=8.76x(10-0.1)+18.76
=8.76x10-8.76x0.1+18.76
=87.6+18.76-0.876
=106.36-(1-0.124)
=106.36-1+0.124
=105.36+0.124
=105.484
谢谢,请采纳
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展开全部
8.76×9.9+18.76 =8.76*10-8.76*0.1+18.76=105.484
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