Across
- 3. A group of ten hundreds
- 4. The number that represents the absence of any quantity
- 6. The sum of the first three prime numbers
- 7. The second and smallest even prime number
- 8. A group of ten tens
Down
- 1. A group of one thousand thousands
- 2. The smallest odd prime number
- 5. The first and smallest positive integer
- 6. The smallest composite number
- 7. The base unit in the decimal number system