如题所述
第1个回答 2016-06-23
102×45
=(100+2)x45
=100x45+2x45
=4500+90
=4590本回答被提问者采纳
=(100+2)x45
=100x45+2x45
=4500+90
=4590本回答被提问者采纳
第2个回答 2016-06-23
=100*45+2*45
=4500+90
=4590
=4500+90
=4590
第3个回答 2016-06-23
=(100+2)x45
=100x45+2x45
=4500+90
=4590
=100x45+2x45
=4500+90
=4590