99*102+999*33快点啊!简算!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 13:55:21
![99*102+999*33快点啊!简算!](/uploads/image/z/15064948-28-8.jpg?t=99%2A102%2B999%2A33%E5%BF%AB%E7%82%B9%E5%95%8A%21%E7%AE%80%E7%AE%97%21)
99*102+999*33快点啊!简算!
99*102+999*33
快点啊!简算!
99*102+999*33快点啊!简算!
原式=(100-1)*102+(1000-1)*33
=10200-102+33000-33
=10200+33000-102-33
=43200-135
=43065
99*102+999*33=10200-102+33000-33=43065
99×102+999×33
=99×102+99×333
=99×435
=(100-1)×435
=43500-435
=43065
99*102+999*33
=11*(9*102+999*3)
=11*9*(102+111*3)
=99*435
=435(100-1)
=43500-435
=43065