Question

145*55+45*55简便方法？

Answer 1

这道乘法和加法的综合算式，只要把式子中相同的被乘数提出来，再进行运算，就会比较简便了。
145x55+45x55
=(145+45)x55
=190x55
=10450

Answer 2

145*55+45*55
=(145+45) * 55
=190 *55
=(200-10) * 55
=200*55 - 10*55
=11000-550
=10450

Answer 3

55×（45+145）