Question

55.7×7.65+7.65×55.7+15.3×44.3怎么简算？

55.7×7.65+7.65×55.7+15.3×44.3怎么简算

Answer 1

55.7*7.65+7.65*55.7+15.3*44.3=55.7*7.65+7.65*55.7+7.65*2*44.3=55.7*7.65+7.65*55.7+7.65*44.3+7.65*44.3=7.65*（55.7+44.3）*2=15.3*100=1530

Answer 2

55.7×7.65+7.65×55.7+15.3×44.3
=55.7×(7.65+7.65)+15.3×44.3
=55.7×15.3+15.3×44.3
=15.3×(55.7+44.3)
=15.3×100
=1530