Maths crossword

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Across
  1. 1. when I do times one number
  2. 4. 56 divided by 5 equals 11 ______ 1
  3. 6. 456 has 6 ______
  4. 7. _____ of 16 is 8
Down
  1. 2. _____ numbers can only be divided with 1 or themselves
  2. 3. 15 is _____ by 3,5 and 15
  3. 5. 237 has 3 _____