Maths crossword

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Across
  1. 2. This is the size of a surface
  2. 4. What does ÷ mean?
  3. 7. Represents more than 1 whole fraction
  4. 8. The outside of a shape
Down
  1. 1. They have the same value
  2. 3. What does + mean?
  3. 5. The amount of room in a object
  4. 6. What is halve of a whole?