Maths

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Across
  1. 4. 9+10-11=
  2. 7. 9+10=
  3. 8. 9+10 plus 1
Down
  1. 1. 12+13-9=
  2. 2. 8x3-6=
  3. 3. 35+35 equals me
  4. 5. how many mm in 3 cm
  5. 6. how many cm in 1 m