1. Rounding Numbers to the 100 Thousands Place
Copyright © 2013 Kelly Mott

2. Rounding Part 1: Lesson Part 2: Online Practice
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3. FOCUS QUESTION: What does it mean to round a number?
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4. Rounding
When you round a number you tell about how many or about how much.
Rounding does not give an exact amount.
How many cookies are in the cookie jar?
Answer: There are about 20 cookies in the cookie jar.
Copyright © 2013 Kelly Mott

5. FOCUS QUESTION: How do I decide what to round to?
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6. When you round a number you can do the following:
You can look at a number line to see what number your number is closer to.
You can follow the rounding rules to help you round a number.
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7. Rounding with a Number Line
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8. Rounding to the Nearest 10
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9. Round to the Nearest 10 You can use a number line to round numbers.
Round 32 to the nearest ten:
32 is closer to __________, so it rounds to ___________. 30 40
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10. Round to the Nearest 10 Round 66 to the nearest ten:
66 is closer to __________, so it rounds to ___________. 60 70
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11. Round to the Nearest 10 Round 114 to the nearest ten:
114 is closer to __________, so it rounds to ___________.
110
120
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12. Round to the Nearest 10 Round 189 to the nearest ten:
114 is closer to __________, so it rounds to ___________.
180
190
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13. Rounding to the Nearest 100
Copyright © 2013 Kelly Mott

14. Round to the Nearest 100 You can use a number line to round numbers.
Round 857 to the nearest hundred:
857 is closer to __________, so it rounds to ___________.
900
600
700
800
Copyright © 2013 Kelly Mott

15. Round to the Nearest 100 Round 612 to the nearest hundred:
612 is closer to __________, so it rounds to ___________.
900
600
700
800
Copyright © 2013 Kelly Mott

16. Round to the Nearest 100 Round 788 to the nearest hundred:
788 is closer to __________, so it rounds to ___________.
900
600
700
800
Copyright © 2013 Kelly Mott

17. Round to the Nearest 100 Round 735 to the nearest hundred:
735 is closer to __________, so it rounds to ___________.
900
600
700
800
Copyright © 2013 Kelly Mott

18. Does this make sense so far?
Copyright © 2013 Kelly Mott

19. Rounding Rules
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20. Rounding to the Nearest 10
Copyright © 2013 Kelly Mott

21. Rounding Without a Number Line
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number. 78
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

22. You can use this poem to help you round numbers:
Find your number.
Look right next door.
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2013 Kelly Mott

23. 15 Rounding Practice 1: Round to the nearest ten:
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number. 15
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

24. 33 Rounding Practice 2: Round to the nearest ten:
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number. 33
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

25. 228 Rounding Practice 3: Round to the nearest ten:
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
228
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

26. 3,614 Rounding Practice 4: Round to the nearest ten:
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
3,614
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

27. 32,576 Rounding Practice 5: Round to the nearest ten:
RULES FOR ROUNDING
Round to the nearest ten:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
32,576
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

28. Does this make sense so far?
Copyright © 2013 Kelly Mott

29. Rounding to the Nearest 100
Copyright © 2013 Kelly Mott

30. 215 Rounding Practice 1: Round to the nearest hundred:
RULES FOR ROUNDING
Round to the nearest hundred:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
215
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

31. 563 Rounding Practice 2: Round to the nearest hundred:
RULES FOR ROUNDING
Round to the nearest hundred:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
563
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

32. 3,481 Rounding Practice 3: Round to the nearest hundred:
RULES FOR ROUNDING
Round to the nearest hundred:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
3,481
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

33. 13,854 Rounding Practice 4: Round to the nearest hundred:
RULES FOR ROUNDING
Round to the nearest hundred:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
13,854
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

34. 51,318 Rounding Practice 5: Round to the nearest hundred:
RULES FOR ROUNDING
Round to the nearest hundred:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
51,318
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

35. Does this make sense so far?
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36. Rounding to the Nearest 1000
Copyright © 2013 Kelly Mott

37. 2,415 Rounding Practice 1: Round to the nearest thousand:
RULES FOR ROUNDING
Round to the nearest thousand:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
2,415
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

38. 1,233 Rounding Practice 2: Round to the nearest thousand:
RULES FOR ROUNDING
Round to the nearest thousand:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
1,233
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

39. 13,581 Rounding Practice 3: Round to the nearest thousand:
RULES FOR ROUNDING
Round to the nearest thousand:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
13,581
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

40. 39,150 Rounding Practice 4: Round to the nearest thousand:
RULES FOR ROUNDING
Round to the nearest thousand:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
39,150
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

41. 103,718 Rounding Practice 5: Round to the nearest thousand:
RULES FOR ROUNDING
Round to the nearest thousand:
Underline the number in the place value you will round.
2. Circle the number to the right of the underlined number.
103,718
Use the rounding pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 2 7 1 6 5
4. Any digit to the left of the underlined digit stays the same.
Copyright © 2013 Kelly Mott

42. Does this make sense so far?
Copyright © 2013 Kelly Mott

43. Rounding to the 10 Thousands
Copyright © 2013 Kelly Mott

44. Round to the Nearest Ten Thousand
18,200
11,400
143,466
106,640
Copyright © 2013 Kelly Mott

45. Round to the Nearest Ten Thousand
52,109
16,419
701,466
167,640
Copyright © 2013 Kelly Mott

46. Does this make sense so far?
Copyright © 2013 Kelly Mott

47. Rounding to the 100 Thousands
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48. Round to the Nearest 100 Thousand
352,200
161,400
5,143,466
8,706,640
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49. Round to the Nearest 100 Thousand
337,488
169,859
7,450,466
2,247,640
Copyright © 2013 Kelly Mott

50. Does this make sense so far?
Copyright © 2013 Kelly Mott

51. Copyright © 2013 Kelly Mott

52. Online Practice:
Copyright © 2013 Kelly Mott