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Efficient Strategies for Finding Friendly Numbers

Learn how to make landmark or friendly numbers using specific techniques to make calculations easier and faster. Discover simple methods for creating friendly numbers that facilitate mathematical operations.

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Efficient Strategies for Finding Friendly Numbers

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  1. Making Landmark or friendly numbers

  2. 9 + 1 9 + 1 + 4 9 + 5 9 + 6

  3. 8 + 2 8 + 2 + 4 8 + 6 8 + 5

  4. 7 + 3 7 + 3 + 3 7 + 6 7 + 9

  5. 6 + 4 6 + 4 + 3 6 + 7 6 + 10 6 + 9

  6. 10 + 12 9 + 12 9 + 15

  7. 10 + 10 9 + 9 9 + 8

  8. 8 + 2 8 + 2 + 11 8 + 13 8 + 15

  9. 20 + 5 19 + 1 + 4 19 + 5 19 + 8

  10. 20 + 20 19 + 20 19 + 19

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