1. Estimating Sums and Differences 10 20 30 40 50 Estimating Products and Quotients 10 20 30 40 50 Factors and GCF 10 20 30 40 50 Multiples and GCM 10 20 30 40 50 Prime and Composite Numbers 10 20 30 40 50

2. Estimating Sums and Differences questions follow

3. Question Find the sum. Check to see if your answer is reasonable by rounding to the nearest hundred. 475+ 382 = 10 Estimating Sums and Differences

4. Answer 475 + 382 = 857 500 + 400 = 900 10 Estimating Sums and Differences

5. Question Find the difference. Check to see if your answer is reasonable by rounding to the nearest hundred. 836 – 487 = 20 Estimating Sums and Differences

6. Answer 836 – 487 = 349 800 – 500 = 300 20 Estimating Sums and Differences

7. Question Do you need an estimate or an exact answer? Decide and then solve. Avin spent $13.99 on a sweater, $6.29 on a pair of socks, and $7.98 on My Little Pony pajama pants. About how much money did he spend in all? 30 Estimating Sums and Differences

8. Answer Estimate! $13 + $6 + $8 = About $27 in all. 30 Estimating Sums and Differences

9. Question Do you need an estimate or an exact answer? Decide and then solve. A bottle contains 784 milliliters of milk. A family drinks 309 milliliters of milk at breakfast and the rest at dinner. How much did they drink at dinner? 40 Estimating Sums and Differences

10. Answer Exact answer! 784 – 309 = 475 milliliters left 40 Estimating Sums and Differences

11. Question Decide if you need an estimate or an exact answer. Then solve. Mrs. O’Connor wants to buy Mac a totally unnecessary gold-plated dog bowl. The dog bowl costs $857. Mrs. O’Connor has $325. About how much more money will Mrs. O’Connor need to buy the dog bowl? 50 Estimating Sums and Differences

12. Answer Estimate! $900 - $300 = About $600 more 50 Estimating Sums and Differences

13. Estimating Products and Quotients questions follow

14. Question Estimate the product: 42 x 4 = 10 Estimating Products and Quotients

15. Answer What is 40 x 4 = 160? 10 Estimating Products and Quotients

16. Question Estimate the product: 72 x 26 = 20 Estimating Products and Quotients

17. Answer What is 70 x 30 = 2,100? 20 Estimating Products and Quotients

18. Question Estimate the product: 567 x 7 = 30 Estimating Products and Quotients

19. Answer What is 600 x 7 = 4,200? 30 Estimating Products and Quotients

20. Question Estimate the quotient (this will be a bonus on the test!): 335 ÷ 8 = 40 Estimating Products and Quotients

21. Answer What is 320 ÷ 8 = 40? 40 Estimating Products and Quotients

22. Question Decide whether you need an estimate or an exact answer. Then solve. Mrs. Fickert buys 8 boxes of crayons for her class. Each box contains 64 crayons. About how many new crayons will the class get? 50 Estimating Products and Quotients

23. Answer Estimate! 8 x 60 = About 480 new crayons 50 Estimating Products and Quotients

24. Factors and GCF questions follow

25. Question List the factors of 24. 10 Factors and GCF

26. Answer What are 1, 2, 3, 4, 6, 8, 12, 24? 10 Factors and GCF

27. Question What is the sum of all the factors of 55? 20 Factors and GCF

28. Answer What is 1 + 5 + 11 +55 = 72? 20 Factors and GCF

29. Question Name the common factors of 12 and 18. 30 Factors and GCF

30. Answer What are 1, 2, 3, 6? 30 Factors and GCF

31. Question What is the GCF of 32 and 42? 40 Factors and GCF

32. Answer What is 2? 40 Factors and GCF

33. Question What is the GCF of 48 and 72? (Hint: The division method may help here.) 50 Factors and GCF

34. Answer What is 24? 50 Factors and GCF

35. Multiples and GCM questions follow

36. Question What are the first 7 multiples of 4? 10 Multiples and GCM

37. Answer What are 4, 8, 12, 16, 20, 24, 28? 10 Multiples and GCM

38. Question Find a common multiple of 3 and 4. 20 Multiples and GCM

39. Answer What is 12, 24, 36, etc.? 20 Multiples and GCM

40. Question What is the least common multiple (LCM) of 6 and 8? 30 Multiples and GCM

41. Answer What is 24? 30 Multiples and GCM

42. Question What is the least common multiple (LCM) of 6 and 9? 40 Multiples and GCM

43. Answer What is 18? 40 Multiples and GCM

44. Question LeSean McCoy and Jeremy Maclin are running laps during practice. McCoy finishes a lap every 4 minutes and Maclin finishes a lap every 3 minutes. If they start running at the same time, they will meet again at the finish line after finishing the _____th lap. (Hint: Think about common multiples)! 50 Multiples and GCM

45. Answer What is the 12 th lap? 50 Multiples and GCM

46. Prime and Composite Numbers questions follow

47. Question List the factors of 5. Is it a prime number? 10 Prime and Composite Numbers

48. Answer What is 1,5 – PRIME? 10 Prime and Composite Numbers

49. Question List the factors of 9. Is it a prime number? 20 Prime and Composite Numbers

50. Answer What are 1,3, 9 – NOT PRIME? 20 Prime and Composite Numbers

51. Question List the factors of 63. Is it a prime number or a composite number? 30 Prime and Composite Numbers

52. Answer What are 1, 3, 7, 9, 21, 63 – COMPOSITE? 30 Prime and Composite Numbers

53. Question List two prime numbers that are less than 20. 40 Prime and Composite Numbers

54. Answer What are 2, 3, 5, 7, 11, 13, 17, 19? 40 Prime and Composite Numbers

55. Question Explain why 1 is NOT a prime number or a composite number. 50 Prime and Composite Numbers

56. Answer What is 1 has only one factor – 1! A prime number has exactly 2 factors – itself and 1. A composite number has more than two factors. 50 Prime and Composite Numbers