Words for numbers

12345678910
Across
  1. 2. 3 singers/musicians
  2. 6. 3 siblings born together
  3. 9. 1 billion bytes of data on a hard drive
  4. 10. 4 singers/musicians
Down
  1. 1. 2
  2. 3. A shape with 8 sides
  3. 4. 1000 grams in the metric system
  4. 5. 100 years
  5. 7. 20 of something
  6. 8. 12 eggs