- Math problem number (DIVISOR with 7 letters)
- Personal math problem (HUMANEQUATION with 13 letters)
- Math student's problem (AREA with 4 letters)
- Subj. of the Â“traveling salesmanÂ” problem in mathematics (RTE with 3 letters)
- Does a certain math problem (ADDS with 4 letters)
- French mathematician Henri whose conjecture was one of the great unsolved problems (until it was cracked in 2003) (POINCARE with 8 letters)
- Classic math problem involving a chess piece's movement through the board (KNIGHTSTOUR with 11 letters)
- Page of math problems, say (HOMEWORK-2 with 10 letters)
- Math problems, at times (ADDITIONALTAXES with 15 letters)
- Math problem numbers (ADDENDS with 7 letters)