23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?

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23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?23.8-0.17+16.7-(2.83+0.5)怎样用巧妙

23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?
23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?

23.8-0.17+16.7-(2.83+0.5)怎样用巧妙方法计算?
23.8-0.17+16.7-(2.83+0.5)
=23.8+(16.7-0.5)-(0.17+2.83)
=23.8+16.2-3
=40-3
=37