将下列题用简便方法算出来!8.41乘47+8.41乘52+8.4112.67-(2.67+0.89)

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将下列题用简便方法算出来!8.41乘47+8.41乘52+8.4112.67-(2.67+0.89)
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将下列题用简便方法算出来!8.41乘47+8.41乘52+8.4112.67-(2.67+0.89)
将下列题用简便方法算出来!
8.41乘47+8.41乘52+8.41
12.67-(2.67+0.89)

将下列题用简便方法算出来!8.41乘47+8.41乘52+8.4112.67-(2.67+0.89)
8.41*47+8.41*52+8.41
=8.41*47+8.41*52+8.41*1
=8.41*(47+52+1)
=8.41*100
=841
12.67-(2.67+0.89)
=12.67-2.67-(1-0.11)
=10-1+0.11
=9.11