1. ............ is a series or system of written symbols used to represent numbers, amounts, or elements in something such as music or mathematics.

Notation

Nation

Notional

Natation

2. ............ is a synonym of natation.

Forget

Note

Reading

Listening

3. ............ isn't a synonym of notation.

Listening

Writing

Memo

Jotting

4. Some of the ............ were in coded form, he said.

notation

notations

notational

note

5. Reams of handwritten ............ and personal letters littered the floor.

chemical notations

notations chemical

chemic notations

none