OSEF

1234567
Across
  1. 1. The root of square
  2. 3. A number that shows how many parts out of one hundred
  3. 4. The difference between two numbers
  4. 7. The opposite of division
Down
  1. 2. The first number after a comma
  2. 5. The oppsite of subtraction
  3. 6. Multiplication of two same numbers