tic-tac-teo

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Across
  1. 3. A vector that is the product of two other vectors
  2. 4. A standard or point of reference against which things may be compared or assessed
  3. 5. A number below the line in a common fraction; a divisor
  4. 6. A fraction (from the Latin ', broken) is a number that can represent part of a whole. The earliest fractions were reciprocals of
Down
  1. 1. A deduction from the usual cost of something, typically given for prompt or advance payment or to a special category of buyers
  2. 2. A shared multiple of the denominators of several fractions