2. PropertiesEstimation 2 digit by 2 digit 3 digit by 2 digit Word Up! 1010010100101001010010100 2020020200202002020020200 3030030300303003030030300 4040040400404004040040400 5050050500505005050050500

3. Properties 100 points 3 x 0 = 0

4. Properties 100 points Zero Property

5. Properties 200 points 3 x 4 = 4 x 3

6. Properties 200 points Commutative Property

7. Properties 300 points ( 3 x 5) x 6= 3 x ( 5x 6)

8. Poperties 300 points Associative Property of Multiplication

9. Properties 400 points 8 x 1 = 8

10. Properties 400 points Identity Property

11. Properties 500 ( 6 x 1) x 0 = 6 x (1 x 0)

12. Properties 500 Associative Property of Multiplication

13. Estimation 100 points 36 x 27 = ?

14. Estimation 100 points 36 x 27 = ? 40 x 30 = 1200

15. Estimation 200 points 214 x 99 = ?

16. Estimation 200 points 214 x 99 = ? 200 x 100 = 20,000

17. Estimation 300 points 56 x 4 = ?

18. Estimation 300 56 x 4 = ? 60 x 4 = 240

19. Estimation 400 points 405 x 67 = ?

20. Estimation 400 points 405 x 67 = ? 400 x 70 = 28, 000

21. Estimation 500 points 985 x 7 = ?

22. Estimation 500 points 985 x 7 = ? 1000 x 10= 10,000

23. 2 by 2 100 44 x 23 = ?

24. 2 by 2 100 points 1012

25. 2 by 2 200 points 72 x 51 = ?

26. 2 by 2 200 points 3,672

27. 2 by 2 300 points 19 x 15 = ?

28. 2 by 2 300 points 285

29. 2 by 2 400 points 81 x 11 = ?

30. 2 by 2 400 points 891

31. 2 by 2 500 points 25 x 31 = ?

32. 2 by 2 500 points 775

33. 3 by 2 100 points 451 X 10 = ?

34. 3 by 2 100 points 4510

35. 3 by 2 200 points 132 x 47 = ?

36. 3 by 2 200 points 6,204

37. 3 by 2 300 points 901 x 62 = ?

38. 3 by 2 300 points 55,862

39. 3 by 2 400 points 515 x 35 = ?

40. 3 by 2 400 points 18,025

41. 3 by 2 500 points 236 x 46 = ?

42. 3 by 2 500 points 10,856

43. Word Up 100 points The fifth grade at Saint Pius X School sold more popcorn than any other class. Their order was for 17 cases of popcorn. Each case held 242 bags of popcorn. How many bags were sold by the fifth grade?

44. Word Up 100 points The fifth grade class sold 4,114 bags of popcorn.

45. Word Up 200 points Is 3,198 a reasonable product for 727 x 44? Why or why not?

46. Word Up 200 points No, because if estimated the product would be 28,000. 727 x 44 =? 700 x 40= 28,000

47. Word Up 300 points There are 18 classrooms at Saint Pius X School Each classroom holds about 25 students. What is an estimate of the number of students at Saint Pius X School?

48. Word Up 300 points An estimate of the number of students at Saint Pius X School would be about 600 students. 20 x 30= 600

49. Word Up 400 points Mrs. Dates is buying 3 computers at the cost of $900 for each computer. If she buys them on credit and pays $98 per month will she have paid for all of the computers at the end of 12 months?

50. Word Up 400 points The total cost of the computers is $2,700. If bought on credit at the end of 12 months Mrs. Dates will have paid $1,176. The computers will not be paid in full at the end of one year. It will take about 28 months or more than 2 years to pay for the computers if bought on credit.

51. Word Up 500 points Kiran helped his father clean the garage this weekend. If Kiran took eight 15 minute breaks, how much time did he spend on breaks?

52. Word Up 500 points 8 x 15 = 120 Kiran spent 120 minutes on breaks or 2 hours.