What do you remember about math?

1234567
Across
  1. 2. What is a point on a graph called?
  2. 5. What is the inverse/opposite of addition?
  3. 6. What is a letter called in math?
  4. 7. What is the abbreviation for the "Order of Operations"?
Down
  1. 1. What is the name for this symbol: ( ) ?
  2. 3. What is the inverse/opposite of multiplication?
  3. 4. What are terms called that have the same variable and same exponent?