Maths

123456
Across
  1. 4. - A number (or group of numbers) used to indicate the position of something
  2. 6. - The action of replacing something with another thing
Down
  1. 1. - Joining or merging different parts/things
  2. 2. - arrange in a particular sequence
  3. 3. quantity less than zero
  4. 5. - having the same or similar affect as