Question

56×99 +99的简便运算？

Answer 1

解：简便计算方法如下
56×99+99
=99×（56+1）
=99×57
=（100-1）×57
=100×57-1×57
=5700-57
=5643

Answer 2

＝56×99+1×99
＝（56+1）×99
＝57×99
＝57×（100-1）
＝57×100-57
＝5700-57
=5643
望采纳，谢谢

Answer 3

56×99+99=56×99+56+43=56×（99+1）+43=5600+43=5643

追答

56×99+99=56×99+56+43=56×（99+1）+43=5600+43=5643

56×99+99=56×99+56+43=56×（99+1）+43=56×100+43=5600+43=5643

Answer 4

56×99+99
=（56+1）×99
=57×（100-1）
=57×100-57
=5643

Answer 5

56*99+99
=56*（99+1）
=56*100
=5600