1. Unit 2 Lesson 7 Part 1: Rounding to the Nearest Ten
Copyright © 2009 Kelly Mott

2. Unit 2 Lesson 7 Part 1: Rounding to the Nearest Ten
Copyright © 2009 Kelly Mott

3. Part 1: What is Rounding?
Copyright © 2009 Kelly Mott

4. What is Rounding?
Rounding is a way to estimate or tell about how many.
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 © 2009 Kelly Mott

5. Answer: About 300 kids attend East Elementary.
What is Rounding?
Here’s another example:
How many kids go to East?
Answer: About 300 kids attend East Elementary.
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6. Whenever you see the word:
What is Rounding?
Whenever you see the word:
THAT MEANS THE ANSWER WAS ROUNDED!
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7. Rounding
WHEN WE ROUND WE TELL:
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8. Can you think of an example of when we might use rounding?
What is Rounding?
Can you think of an example of when we might use rounding?
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9. Part 2: Rounding with a Number Line
Copyright © 2009 Kelly Mott

10. Round to the Nearest Ten
What is 13 rounded to the nearest ten?
Find 13 on the number line. Put a dot.
Is 13 closer to 10 or 20? __________________
Answer: 13 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

11. Round to the Nearest Ten
What is 19 rounded to the nearest ten?
Find 19 on the number line. Put a dot.
Is 19 closer to 10 or 20? __________________
Answer: 19 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

12. Round to the Nearest Ten *Hint: When we have 5 or more, we round up.
What is 15 rounded to the nearest ten?
Find 15 on the number line. Put a dot.
Is 15 closer to 10 or 20? __________________
Answer: 15 rounded to the nearest ten is ____
*Hint: When we have 5 or more, we round up.
Copyright © 2009 Kelly Mott

13. Does this make sense?
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14. Copyright © 2009 Kelly Mott

15. Copyright © 2009 Kelly Mott

16. Round to the Nearest Ten
What is 54 rounded to the nearest ten?
Find 54 on the number line. Put a dot.
Is 54 closer to 50 or 60? __________________
Answer: 54 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

17. Round to the Nearest Ten
What is 78 rounded to the nearest ten?
Find 78 on the number line. Put a dot.
Is 78 closer to 70 or 80? __________________
Answer: 78 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

18. Round to the Nearest Ten *Hint: When we have 5 or more, we round up.
What is 85 rounded to the nearest ten?
Find 85 on the number line. Put a dot.
Is 85 closer to 80 or 90? __________________
Answer: 85 rounded to the nearest ten is ____
*Hint: When we have 5 or more, we round up.
Copyright © 2009 Kelly Mott

19. Copyright © 2009 Kelly Mott

20. Copyright © 2009 Kelly Mott

21. Round to the Nearest Ten
What is 42 rounded to the nearest ten?
Find 42 on the number line. Put a dot.
Is 42 closer to 40 or 50? __________________
Answer: 42 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

22. Round to the Nearest Ten *Hint: When we have 5 or more, we round up.
What is 65 rounded to the nearest ten?
Find 65 on the number line. Put a dot.
Is 65 closer to 60 or 70? __________________
Answer: 65 rounded to the nearest ten is ____
*Hint: When we have 5 or more, we round up.
Copyright © 2009 Kelly Mott

23. Round to the Nearest Ten
What is 26 rounded to the nearest ten?
Find 26 on the number line. Put a dot.
Is 26 closer to 20 or 30? __________________
Answer: 26 rounded to the nearest ten is ____
Copyright © 2009 Kelly Mott

24. Copyright © 2009 Kelly Mott

25. Part 3: Rounding without a Number Line
Copyright © 2009 Kelly Mott

26. Steps to Round a Number:
Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 26
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

27. 32 Practice # 1: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 32
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

28. 67 Practice # 2: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 67
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

29. 14 Practice # 3: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 14
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

30. 91 Practice # 4: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 91
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

31. 86 Practice # 5: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 86
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

32. 45 Practice # 6: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 45
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

33. 54 Practice # 7: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 54
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

34. 78 Practice # 9: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 78
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

35. 23 Practice # 8: STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 23
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

36. 85 Practice # 10 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 85
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

37. 91 Practice # 11 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 91
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

38. 72 Practice # 14 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 72
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

39. 89 Practice # 12 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 89
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

40. 27 Practice # 13 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 27
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

41. 35 Practice # 15 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 35
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

42. 83 Practice # 16 STEPS: Underline the place you are rounding to.
Circle the number to the right.
If the number to the right is 0, 1, 2, 3, or 4, then the underlined number stays the same.
If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
Every number to the right of the underlined number becomes a zero.
Round to the nearest ten: 83
Hint for the Circled Number:
4 or less just ignore.
5 or more, add 1 more.
Copyright © 2009 Kelly Mott

43. Copyright © 2009 Kelly Mott

44. Does this make sense?
Copyright © 2009 Kelly Mott

45. HOMEWORK
Teacher Worksheet: Rounding to Nearest Ten Worksheet Math Steps Pages: none Re-teach Page: none
Copyright © 2009 Kelly Mott

46. You can use the Rounding Pyramid:
Underlined number rounds up one
Add the zeros
Underlined number stays the same
Add the zeros 9 4 8 3 7 2 6 1 5
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47. Practice Rounding to the Nearest 10
AAA Math
Jan Brett Seashell site – rounding to the nearest ten
Copyright © 2009 Kelly Mott