Across
- 3. blue plus red
- 4. four times ten
- 6. orange minus yellow
- 7. seventy minus sixty-nine
- 10. a hundred divided by four
Down
- 1. blue plus yellow
- 2. black plus white
- 4. three multiplied by five
- 5. divided by two
- 8. thirteen minus four
- 9. eighteen divided by three