83乘99加83的简便运算

Question

如题所述

Answer 1

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
83×99+83
= 83× ( 99+1)
= 83×100
= 8300

Answer 2

83×99+83
＝83×（99+1）
＝83×100
＝8300

Answer 3

83乘99加一括号八等于83乘100等于8300

Answer 4

83×99+83
=83×（99+1）
=83×100
=8300

Answer 5

83×(100-1)+83
＝8300-83+83
＝8300