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Secret Code Words worksheet for learning letter-number substitution.

Educational worksheet: Free Printable Crack the Code Worksheet - kiddoworksheets. Download and print for classroom or home learning activities.

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1. thirty
2. fifteen
3. nine
4. eight
5. six
6. twelve
7. twenty
8. seven
9. five
10. fourteen
11. one
12. three
13. ten
14. four
15. two
16. eleven
17. sixteen
18. nineteen
19. seventeen
20. eighteen
21. thirteen
22. twenty-one
23. twenty-two
24. twenty-three
25. twenty-four
26. twenty-five
27. twenty-six

Parent Tip: Review the logic above to help your child master the concept of free printable secret code worksheets.

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