Frame at least 8 different equations by inserting plus and minus signs only into 1,2,3,4,5,6,7,8,9; to give a total of 100.

For example: 123 - 45 - 67 + 89 = 100

(The numbers must stay in the normal ascending order from 1 to 9).

123 + 45 - 67 + 8 - 9

123 + 4 - 5 + 67 - 89

123 - 45 - 67 + 89

123 - 4 - 5 - 6 - 7 + 8 - 9

12 + 3 + 4 + 5 - 6 - 7 + 89

12 + 3 - 4 + 5 + 67 + 8 + 9

12 - 3 - 4 + 5 - 6 + 7 + 89

1 + 23 - 4 + 56 + 7 + 8 + 9

1 + 23 - 4 + 5 + 6 + 78 - 9

1 + 2 + 34 - 5 + 67 - 8 + 9

1 + 2 + 3 - 4 + 5 + 6 + 78 + 9

-1 + 2 - 3 + 4 + 5 + 6 + 78 + 9

Posted by Jim Lyon on 2003-02-05 06:29:10