如题所述
第1个回答 2018-04-03
=75X(2十100)
=75X2十75x100
=150十7500
=765O
=75X2十75x100
=150十7500
=765O
第2个回答 2022-12-11
乘法分配律为:两个数的和与一个数相乘,先将它们与这个数分别相乘,再相加,积不变.即:(a+b)×c=a×c+b×c.反过来则:a×c+b×c=(a+b)×c
75×102
= 75× ( 100+2)
= 75×100+75×2
= 7500+150
= 7650
75×102
= 75× ( 100+2)
= 75×100+75×2
= 7500+150
= 7650