102X35十98X42的简面计算
102x35加98x42的简便方法 -
102x35+98x42=102x35+98x35+98x7=35x(102+98)+(100-2)x7=35*200+700-14=7686
(1) = 366996x42 (2) = 15413832
102x35+98x42=102x35+98x35+98x7=35x(102+98)+(100-2)x7=35*200+700-14=7686
(1) = 366996x42 (2) = 15413832