Lippincott's Mental Arithmetic Embracing the Principles of Analysis And Induction
Lippincott's Mental Arithmetic Embracing the Principles of Analysis And Induction
Rawlins, J. Morgan (James Morgan)
The book Lippincott's Mental Arithmetic Embracing the Principles of Analysis And Induction was written by author Rawlins, J. Morgan (James Morgan) Here you can read free online of Lippincott's Mental Arithmetic Embracing the Principles of Analysis And Induction book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Lippincott's Mental Arithmetic Embracing the Principles of Analysis And Induction a good or bad book?
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90 is ff . 25. 28 is ^. 6. 75 is |. 16. 60 is if. 26. 42i8^. 7. 72 is f . 17. 48 is H- 27. 80 is ^. 8. 96 is f 18. 32 is f 28. 75 is f 9. 30 is Y- 19, 16 is J. 29. 45i8^. 10. 24 is f 20. 120 is f 30. 96 is If. Digitized by Google COMMON FRACTIONS 93 3. 17 is f of what number ? Solution. — The equations are | K = 17 ; ^ 1^. = ^; |K = i^ = 28i. 4. In like manner find of what number : 1. 16 is |. 5. 6 is {^. 9. 29 is f 13. 23 is f 2. 14 is |. 6. 13 is |. 10. 40 is f 14. 100 is f 3. 12 is f 7. 19 i...s |. 11. 22 is |. 15. 14 is ^. 4. 9 is f 8. 7 is f 12. 20 is f 16. 17 is f . 5. 25 is f of how many times 10? Solution. — 1. The equations are 25 = | of 40; 40 = 4 times 10. 2. Therefore, 25 is f of 4 times 10. 6. 24 is f of how many times 8 ? 4 ? 16 ? 32 ? 64 ? 30isf of how many times 3? 2? 6? 9? 4? 12? 8 is} of how many times i? |? f? f? ^? {^1 9 is f of how many times 2 ? 3? 4? 12? 24? LESSON XXVIII. Problems. 1. If I paid $7 a cord for wood, and if $49 is ^ of what I paid in all, how many cords did I buy ?
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