4.4×57.8+45.3×5.6越快解决越好_数学解答

4.4×57.8+45.3×5.6
越快解决越好

人气：277 ℃　时间：2020-04-21 06:34:58

解答

=4.4×(45.3+12.5)+45.3×5.6
=4.4×45.3+4.4×12.5+45.3×5.6
=45.3×(4.4+5.6)+11×0.4×2.5×5
=453+55
=508