Across
- 3. old tool with beads for counting
- 4. card with holes for computer data
- 5. sharing numbers equally
- 7. Babbage's machine for math tables
- 8. making numbers bigger by adding again and again
Down
- 1. taking one number away
- 2. math expression with x powers like x² + x + 1
- 3. putting numbers together
- 6. sliding stick for fast math