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Across
  1. 4. such a fraction in lowest terms
  2. 5. such a division by zero
Down
  1. 1. such a fraction with a numerator smaller than the denominator
  2. 2. such fractions when one is obtained from the other by multiplying numerator and denominator by a number
  3. 3. the...of two fractions is the LCM of their denominators