1. 200 400 600 800 1,000 Estimation Rounding Word Problems Math Vocabulary Miscellaneous 200 400 600 800 1,000

2. Final Jeopardy

3. Estimation – 200 points Estimate the sum below… 1,035 + 892 Answer

4. Estimation – 400 points Estimate the difference below. 9,647 - 2,182 Answer

5. Estimation – 600 points Why is estimating a useful thing to know how to do? Answer

6. Estimation – 800 points People around the world spend $82,794 every minute on Amazon.com. About how much money is spent on the website every two minutes? Answer

7. Estimation – 1,000 points 1,879 people went to a fast-food restaurant the day it opened. 2,326 people went the second day it was open. Approximately how many people ate at the fast-food restaurant the first two days? Answer

8. Rounding – 200 points What is 47 rounded to the nearest ten? Answer

9. Rounding – 400 points What is 239 rounded to the nearest hundred? Answer

10. Rounding – 600 points What is 9,517 rounded to the nearest thousand? Answer

11. Rounding – 800 points What is 34,989 rounded to the nearest ten thousand? Answer

12. Rounding – 1,000 points What is 681,024 rounded to the nearest hundred thousand? Answer

13. Word Problems – 200 points Paulina's mother made 510 cupcakes for the school bake sale. On the very first day, 389 of them sold. Roughly, how many cupcakes are left? Answer

14. Word Problems – 400 points There are 470,253 books in a college library. Of those books, 27,938 of them are brand new. How many more books in the college library are old? Answer

15. Word Problems – 600 points A group of mountain climbers want to climb to the top of a mountain, which is 15,703 feet tall. So far, they have climber 9,836 feet. How many feet remain for the group to reach the top? Answer

16. Word Problems – 800 points Last week, Olivia read 1,273 pages in her book while Cosmo read 568 pages in his. Forecast the total number of pages these two students read. Answer

17. Word Problems – 1,000 points Gregory and his friend were playing a video game. At the end of the game, Gregory scored 8,003 points while his friend scored 5,627 points. What is the difference between how many points were scored? Answer

18. Math Vocabulary – 200 points What do we call the answer to an addition problem? Answer

19. Math Vocabulary – 400 points What is the name of the numbers that are being added together in an addition problem? Answer

20. Math Vocabulary – 600 points In the addition problem below, what are the addends and what is the sum? 235 + 145 = 380 Answer

21. Math Vocabulary – 800 points What do we call the answer to a subtraction problem? Answer

22. Math Vocabulary – 1,000 points What does it mean to estimate? Answer

23. Miscellaneous – 200 points What is 215,483 rounded to the nearest thousand? Answer

24. Miscellaneous – 400 points How do you know when to round up versus keeping a number you are rounding the same? Answer

25. Miscellaneous – 600 points 5,000,000,000,000 - 246,753,894,327 Answer

26. Miscellaneous – 800 points Round 364,928 to the nearest… hundred = _______ thousand = _________ ten-thousand = _________ hundred thousand = _________ Answer

27. Miscellaneous – 1,000 points How do you check the answer to a subtraction problem? Answer

28. Final Jeopardy Question Which is a better estimate for the number 7,603? Is it 7,000 or 8,000? Explain. Answer

29. Estimation – 200 points 1,035 = 1,000 892 = 900 1,000 + 900 = 1,900

30. Estimation – 400 points 9,647 = 10,000 2,182 = 2,000 10,000 – 2,000 = 8,000

31. Estimation – 600 points Estimation is an important part of mathematics and a very handy tool for everyday life. You must be able to accurately estimate amounts of money, lengths of time, distances, and many other things. It can help save you time and simply make things easier for you to figure out.

32. Estimation – 800 points $82,794 = $83,000 83,000 + 83,000 = $166,000 About $166,000 is spent every two minutes on the website.

33. Estimation – 1,000 points 1,879 = 2,000 2,326 = 2,000 2,000 + 2,000 = 4,000 Approximately 4,000 people went to the restaurant.

34. Rounding – 200 points 47 rounded to the nearest ten is 50.

35. Rounding – 400 points 239 rounded to the nearest hundred is 200.

36. Rounding – 600 points 9,517 rounded to the nearest thousand is 10,000.

37. Rounding – 800 points 34,989 rounded to the nearest ten thousand is 30,000.

38. Rounding – 1,000 points 681,024 rounded to the nearest hundred thousand is 700,000.

39. Word Problems – 200 points 510 = 500 389 = 400 500 – 400 = 100 Roughly, 100 cupcakes remain.

40. Word Problems – 400 points 3 6 9 12 4 13 470,253 - 27,938 342,315 342,315 books are old.

41. Word Problems – 600 points 0 14 16 9 13 15,703 - 9,836 5,867 5,867 feet remain.

42. Word Problems – 800 points 1,273 = 1,300 568 = 600 1,300 + 600 = 1,900 The students read about 1,900 pages.

43. Word Problems – 1,000 points 7 9 9 13 8,003 - 5,627 2,376 The difference is 2,376 points.

44. Math Vocabulary – 200 points The answer to an addition problem is called the sum.

45. Math Vocabulary – 400 points The numbers being added together are called the addends.

46. Math Vocabulary – 600 points The addends are 235 and 145. The sum is 380.

47. Math Vocabulary – 800 points The answer to a subtraction problem is called the difference.

48. Math Vocabulary – 1,000 points To estimate means to round to find a number that is close to the right answer. The answer we get does not have to be exact.

49. Miscellaneous – 200 points 215,483 rounded to the nearest thousand is 215,000.

50. Miscellaneous – 400 points If a digit is 0,1,2,3, or 4, you keep the digit you are rounding the same. If it is a 5,6,7,8, or 9, the digit you are rounding goes up by one.

51. Miscellaneous – 600 points 4 9 9 9 9 9 9 9 9 9 9 9 10 5,000,000,000,000 - 246,753,894,327 4,753,246,105,673

52. Miscellaneous – 800 points Round 364,928 to the nearest… hundred = 364,900 thousand = 365,000 ten-thousand = 360,000 Hundred thousand = 400,000

53. Miscellaneous – 1,000 points To check the answer to a subtraction problem, you must add the difference you get to the smaller of the two numbers you were subtracting. Here is an example… 75 – 46 = 29 29 + 46 = 75

54. Final Jeopardy – Answer 8,000 is a better estimate for the number 7,603. When rounding to the nearest whole number, the digit 6 makes the digit 7 go up to an 8. 7,603 is also closer to 8,000 than it is to 7,000.