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Rounding Numbers to the nearest 10 Next Rounding numbers means to get close to the exact number. It’s used when we estimate. Next.

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Presentation on theme: "Rounding Numbers to the nearest 10 Next Rounding numbers means to get close to the exact number. It’s used when we estimate. Next."— Presentation transcript:

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2 Rounding Numbers to the nearest 10 Next

3 Rounding numbers means to get close to the exact number. It’s used when we estimate. Next

4 Rounding to the nearest 10 20 21 22 23 24 25 26 27 28 29 30 These numbers round down to 20 because they are closer. Next

5 Rounding to the nearest 10 20 21 22 23 24 25 26 27 28 29 30 These numbers round up to 30 because they are closer. Next

6 Rounding Poem Find your place Look next door 4 or less… Just ignore. 5 or greater Add one more Next Click to hear poem

7 Let’s round 39 to the nearest 10 Next

8 Underline the place that you want to round to… the tens place. 3939 Next

9 3939 Look next door … To the ones place. Next

10 3939 Circle the digit to the right… The ones place. Next

11 3939 If the circled digit is a 1, 2, 3, 4 … The underlined digit stays the same. Next

12 3939 If the circled digit is a 5, 6, 7, 8, 9 … Add one to the underlined digit. Next

13 39 becomes 40 Add one to the underlined digit…. The circled digit becomes 0. Next

14 This makes sense because 39 is much closer to 40. 30 31 32 33 34 35 36 37 38 39 40 Next

15 Take another look… Let’s round 52 to the nearest ten. Next

16 Underline the digit in the tens place. 5252 Next

17 5252 Look next door... Next

18 5252 Circle the ones digit. Next

19 5252 Is it a 1, 2, 3, 4 ? Next

20 52 becomes 50 Yes! The underlined digit stays the same and the circled digit becomes a 0. Next

21 This makes sense because 52 is much closer to 50. 50 51 52 53 54 55 56 57 58 59 60 Next

22 Take another look… Let’s round 75 to the nearest ten. Next

23 Underline the digit in the tens place. 7575 Next

24 7575 Look next door... Next

25 7575 Circle the ones digit. Next

26 7575 Is it a 1, 2, 3, 4 ? No! Next

27 7575 Is it a 5, 6, 7, 8, 9 ? YES! Next

28 75 becomes 80 The add one to the underlined digit and the circled digit becomes a 0. Next

29 This makes sense because 75 is closer to 80. 70 71 72 73 74 75 76 77 78 79 80 Next

30 Ready to give it a try? Remember the poem if you get stuck. Good luck! Next

31 Round 37 to the nearest 10. Next

32 37 3040

33 Oops! Remember the rule… Next Click to hear poem

34 3737 If the circled digit is 5, 6, 7, 8, 9… Add one to the underlined digit Next

35 37 would be closer to 40. 30 31 32 33 34 35 36 37 38 39 40 Next

36 Let’s try that again! Go

37 Yes! Well done! Next

38 3737 The circled digit is 5, 6, 7, 8, 9… Add one to the underlined digit Next

39 37 would be closer to 40. 30 31 32 33 34 35 36 37 38 39 40 Next

40 Try another! Next

41 Round 83 to the nearest 10. Next

42 83 8090

43 Oops! Remember the rule… Next Click to hear poem

44 8383 If the circled digit is 1, 2, 3, 4… The underlined digit stays the same. Next

45 83 would be closer to 80. 80 81 82 83 84 85 86 87 88 89 90 Next

46 Let’s try that again! Go

47 Yes! Well done! Next

48 8383 The circled digit is 1, 2, 3, 4… The underlined digit stays the same. Next

49 83 would be closer to 80. 80 81 82 83 84 85 86 87 88 89 90 Next

50 Great job! Now try a few on your own. Next

51 Round the following numbers to the nearest 10 on paper. When you are done, bring the paper to me. Good Luck! Next

52 Round 38 to the nearest 10. Next

53 Round 52 to the nearest 10. Next

54 Round 89 to the nearest 10. Next

55 Round 74 to the nearest 10. Next

56 Round 38 to the nearest 10. Next

57 Round 66 to the nearest 10. Next

58 Round 15 to the nearest 10. Next

59 You are done! Thank you for your hard work. Please remember to bring your paper to me.


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