Mathematical Crossword

123456
Across
  1. 2. The number you get when you multiply 3 and 2.
  2. 3. The result of adding two numbers together.
  3. 4. The number of sides in a triangle.
  4. 5. The number that comes after 9.
  5. 6. The number of corners in a square.
Down
  1. 1. The number of legs on a spider.
  2. 3. The number of days in a week.
  3. 5. The smallest even number.