简算题:55.43-(5.43-2.87)+4.52-(3.52-2.13)

问题描述:

简算题:55.43-(5.43-2.87)+4.52-(3.52-2.13)

55.43-(5.43-2.87)+4.52-(3.52-2.13)
=55.43-5.43+2.87+4.52-3.52+2.13
=(55.43-5.43)+(4.52-3.52)+(2.87+2.13)
=50+1+5
=56