Fractions Crossword

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Across
  1. 3. one fifteenth plus four fifths
  2. 5. one and three fifths plus three and two fifths
  3. 6. three ninths plus one third
  4. 7. one one fifth minus three fifths
Down
  1. 1. five tenths plus fifteen twentieths
  2. 2. three fifths plus four fifths minus two fifths
  3. 4. twentyseven seventeenths plus eleven seventeenths (answer is not a mixed number)