1. 2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Prime # GCF LCM exponents Problem solving

2. Which of the following is a prime number? 9, 11, 15, 21

3. 11

4. Which of the following is a composite number? 17, 23, 31, 39

5. 39 = 3 x 13

6. Do a factor tree for 100

7. 100 10 5 2

8. Do the prime factorization of 24

9. 24 = 2 3 x 3

10. Do the prime factorization of 72

11. 72 = 3 2 x 2 x 4

12. What is the GCF of 5 and 15

13. GCF = 5

14. What is the GCF of 16 and 20

15. GCF = 4

16. What is the GCF of 20 and 5 ?

17. GCF = 5

18. What is the GCF of 12, 18, and 24?

19. GCF = 6

20. What is the GCF of 15, 18, and 36?

21. GCF = 3

22. What is the LCM of 3 and 5?

23. LCM = 15

24. What is the LCM of 6 and 10?

25. LCM = 30

26. What is the LCM of 12 and 9?

27. LCM = 36

28. What is the LCM of 4, 5, and 8?

29. LCM = 40

30. What is the LCM of 10, 8, and 6?

31. LCM is 120

32. Write 7 x 7 using exponents

33. 72 72

34. Write 6 3 as a multiplication sentence

35. 6 x 6 x 6

36. Evaluate 2 4

37. 2 x 2 x 2 x 2 = 16

38. (4 + 5) 2

39. 81

40. 6 2 – 2 x 6

41. 6 2 – 2 x 6 = 36 – 2 x 6 = 36 – 12 = 24

42. Egg rolls come in packages of 8. Sonia wants to serve each of her 12 guests the same number of egg rolls with none left over. How many packages does she need?

43. 3 packages

44. What is the least possible 4 digit number for which the sum of the the digits is 5?

45. 1,004

46. Amy places 18 pennies In a row. She replaces Every 3rd penny with a Nickel. She replaces Every 4 th coin with a dime. How many $.01?

47. 9

48. A bakery has 3 choices of cake and 3 choices of frosting. How many combinations are there?

49. 9 combinations

50. One bag of potatoes is twice the weight of the other bag. If they weigh 45lbs together, what do the 2 bags weigh?

51. One bag is 15lbs, The other is 30lbs