Across
- 1. a machine with moveable working parts
- 7. periods of one hundred years
- 9. something that is better than other things of its type
- 10. put one object inside another
Down
- 2. worked with numbers to find an answer
- 3. a person who checks to make sure that things are working as they should
- 4. improving
- 5. spend or throw away something thoughtlessly
- 6. typical or normal
- 8. saying something is not true