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Name: ____________________________________________ Period: _____ Date:______ NCP 301 Packet #2 Standard NCP 201 NCP 301 NCP 401 Description Review Recognize equivalent fractions and fractions in lowest term. Focus Recognize one-digit factors of a number. Stretch Exhibit knowledge of elementary number concept including rounding, the ordering of decimals, pattern identification, absolute value, primes, and greatest common factor. Review 1. Simplify each rational expression. 125 625 27 81 39 52 3 12 2. Which of the following is NOT equivalent to A. 2 12 B. 4 24 C. 6 40 D. 5 30 E. 3 18 3. Which of the following is NOT equivalent to A. 6 16 B. 15 40 C. 31 81 D. 33 88 E. 30 80 4. Which of the following are equivalent to A. 12 150 B. 160 200 C. 160 300 D. 8 50 1 ? 6 E. 40 250 4 ? 25 3 ? 8 Focus 5. What is the greatest common factor of 25 and 40? 6. What is the GCF of 6 and 9? 7. What is the GCF of 12 and 18? 8. What is the GCF of 18, 24, & 36? 9. What is the GCF of 7, 14, and 21? 10. What is the least common multiple of 5 and 2? 11. What is the LCM of 12 and 18? 12. List all the positive factors of 125. 13. List all the positive factors of 72. 14. Is 13 a factor of 26? 15. Explain: 16. Is 72 a factor of 127? 17. Explain: 18. Which of the following is/are even? I. 12 II. 36 III. 101 A. B. C. D. E. I only II only I and II only I and III only I, II, and III 19. Which of the following is (are) odd? I. 24.31 II. 22.49 III. 33.101 F. G. H. I. J. I only II only I and II only I and III only I, II, and III 20. If A=22 (3) (7) = 84, how many positive factors, including 1 and 84, does A have? 21. If B=5(8) (11)=440, how many positive factors, including 1 and 440, does B have? Stretch 22. How many prime numbers are greater than 20 but less than 30? 23. How many prime numbers are greater than 50 but less than 60? 24. 1 2 13 4 17 14 25. Order from least to greatest. 0.9,1.09, 0.0009, 0.009, 0.09, 9.01, 1.9 26. Order from least to greatest. -0.9,-1.09, -0.0009, -0.009, -0.09, -9.01, -1.9 27. Round each number to the nearest tenth. 9.98 8.7342 -4.401 287.123 28. Describe the pattern. Then find the next two numbers in each pattern. 1, -3, 9, -27… 1, 9, 25, 49, … 5, 9, 13, 17, … -5, -2, 1, 4, … 1 1 1 , , ,0,... 2 3 6 29. Which of the following is(are) prime? I. 11 II. 111 III. 1,111 A. B. C. D. E. Only I Only II Only I & II Only I & III I, II, & III