Challenging Cross Figure Puzzles: Volume 2

This is a series of challenging Cross Figure puzzles.
A Cross Figure is like a crossword, but it uses numbers instead of letters.
Each digit occupies a cell and can be part of a "word" in the across and down directions.
Each clue is a mathematical relationship with other clues. For example, a puzzle might have the clue that 1 Across equals 4 Across plus 6 Down.
Visit 3DMathPuzzles.com to download free Cross Figure, TripleCross, and 3D puzzles!