102*98+28*35的简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 03:40:59
![102*98+28*35的简便运算](/uploads/image/z/26883-27-3.jpg?t=102%2A98%2B28%2A35%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
102*98+28*35的简便运算
102*98+28*35的简便运算
102*98+28*35的简便运算
102*98+28*35
=102*(100-2)+4*7*5*7
=10200-204+4*5*7*7
=10200-204+20*49
=10200-204+980
=10976
102×98+28×35
=(100+2)(100-2)+7×4×7×5
=10000-4+49×20
=10000-4+980
=10976
102*(102-2)+7*(4+5)