The Magic of Numbers

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123456789101112131415161718
Across
  1. 3. Which country discovered the number system we use today?
  2. 4. People use this to show numbers.
  3. 7. The 1 in 1.618
  4. 8. They changed the Egyptian system.
  5. 11. A line or scratch
  6. 12. A numberical amount
  7. 14. X
  8. 15. A set of letters, numbers or signs to represent a message
  9. 16. a series of numbers in order.
  10. 17. The people in Africa used this to count.
  11. 18. We use numbers to make this.
Down
  1. 1. A number system with only two numbers.
  2. 2. People in Sumeria need to count their....
  3. 5. A common number in nature is the ____ ratio.
  4. 6. XVII
  5. 9. A non-living thing such as a table.
  6. 10. We find this everywhere.
  7. 13. Children use this system to learn how to count.