cross multiply

14 LETTERS · STARTS WITH C

cross multiply is a valid 14-letter word worth 22 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3R1O1S1S1M3U1L1T1I1P3L1Y4

3 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 4 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does cross multiply mean?