Question

99+999+999999+99999的简便方法

222乘999加333乘334的简便方法. 6+99+999+9999+99999+999999+ 222乘999加333乘334的简便方法. 6+99+999+9999+99999+999999+9999999的简便方法

Answer 1

6+99+999+9999+99999+999999+9999999
=6+9×(11+111+1111+11111+111111+1111111)
=6+9×1 234 566
=6+11111094=11 111 100