Arithmetic and math language

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Across
  1. 3. it is the sum of ten and two divided by two.
  2. 4. it is the second power of three plus eight.
  3. 6. it is the addition of four and three times two.
  4. 8. it is the square root of the difference of 25 and 16, times five.
Down
  1. 1. it is the double of five plus six.
  2. 2. it is half of the sum of twelve and ten.
  3. 4. it is the double of the sum of three and two, minus three
  4. 5. it is the double of the sum of two and seven.
  5. 7. it is the addition of 5 and 8 divided by 2.