在□1□2□3□4□5□6□7□8□9=100這條數式中，填入＋－或空白，令它成為一條完整的數式。

*數字　撲朔迷您 16
 

解：

987654321  ÷ 123456789 ≒ 8 ( 8.0000000729)

123456789 x 2 = 246913578

----- 234567891 x 2 = 469135782

=> 691357824 ÷ 2 = 345678912÷ 2 =172839456

=> 913578264÷ 2 = 456789132 , 913578246÷ 2 = 456789123

=> 135782469 x 2 = 271564938 

----- 234567891 x 4 = 938271564

123456789 x 4 = 493827156

123456789 x 5 = 617283945

=> 172839465 x 5 = 864197325

=> 128394657 x 5 = 641973285 =>    => 128456739 x 5 = 641728395

                                                             = > 145286379 x 5 = 726431895

                                                             = > 128637945 x 5 = 643189725

                                                              = > 194528637 x 5 = 972643185

=> 194657283 x 5 = 973286415

=> 182973465 x 5 = 914867325

=>173465829 x 5 = 867329145

=> 146582973 x 5 = 732914865 

= > 182973465 x 5 = 914867325

=> 182973465 x 5 = 914867325

= 134658297 x 5 = 673291485

=> 146582973 x 5 = 732914865

=.>172946583 x 5 = 864732915

=> 183729465 x5 =918647325

=> 145678923 x 5 = 728394615

=> 839461725 ÷ 5 = 167892345

=> 946172835 ÷ 5 = 189234567

=> 167892345 x 5 = 839461725

123456789 x 7 =  864197523

123456789 x 8 = 987654312