1. Rounding

2. Copyright © 2000 by Monica Yuskaitis Objectives n To be able to round numbers to the nearest n To be able to round numbers to the nearest ten n To be able to round numbers to the nearest hundred n To be able to round numbers to the nearest thousand n To be able to round numbers to the nearest ten thousand n To be able to round numbers to the nearest hundred thousand n To be able to round numbers to the nearest million

3. Copyright © 2000 by Monica Yuskaitis Objectives n To be able to round numbers to the nearest tenth n To be able to round numbers to the nearest hundredth n To be able to round numbers to the nearest millionth

4. Copyright © 2000 by Monica Yuskaitis Vocabulary n Round – to replace an exact number by another that is close to it in value and easier to use. For example, 52, rounded to the nearest ten is 50.

5. Copyright © 2000 by Monica Yuskaitis Memorize this Poem Find your number. Look right next door. 4 or less just ignore. 5 or more, add 1 more.

6. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest ten. Find your number. 4 7 Circle the number in the tens place.

7. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest ten. Look right next door. 4 7 Draw an arrow to the right of the number.

8. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest ten. 4 or less, just ignore. 4 7 7 is larger than 4 so go to the next line of the poem.

9. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest ten. 5 or more, add 1 more. 4 7 Add 1 to the 4. +1

10. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest ten. 5 or more, add 1 more. 5 0 After adding 1 to the 4, all the numbers to the right of the 5 become 0’s.

11. Copyright © 2000 by Monica Yuskaitis The Answer 4 7 rounded to the nearest tens place is 5 0 40 5047 Note 47 is closer to 50 on the number line.

12. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest hundred. Find your number. 9 8 6 Circle the number in the hundreds place.

13. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest hundred. Look right next door. 9 8 6 Draw an arrow to the right of the number.

14. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest hundred. 4 or less, just ignore. 9 8 6 8 is larger than 4 so go to the next line of the poem.

15. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest hundred. 5 or more, add 1 more. 9 8 6 Add 1 to the 9. +1

16. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest hundred. 5 or more, add 1 more. 1, 0 0 0 After adding 1 to the 9, all the numbers to the right of the 10 become 0’s.

17. Copyright © 2000 by Monica Yuskaitis The Answer 986 rounded to the nearest hundreds place is 1, 0 0 0 900 986 Note 986 is closer to 1,000 on the number line.

18. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest thousand. Find your number. 3 5, 3 2 7 Circle the number in the thousands place.

19. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest thousand. Look right next door. 3 5, 3 2 7 Draw an arrow to the right of the number.

20. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest thousand. 4 or less, just ignore. 3 5, 3 2 7 Since 3 is less than 4 we do not change the 5.

21. Copyright © 2000 by Monica Yuskaitis Round this number to the nearest thousand. 4 or less, just ignore. 3 5, 0 0 0 Change the numbers to left of 5 to 0’s.

22. Copyright © 2000 by Monica Yuskaitis The Answer 35,327 rounded to the nearest thousand is 3 5, 0 0 0 36,00035,327 Note 35,327 is closer to 35,000 on the number line than to 36,000.

23. Copyright © 2000 by Monica Yuskaitis Round these numbers to the nearest ten. 1 3 9 4 5 2 8 2 9 7 1 4 0 5 0 2 8 0 1 0 0

24. Copyright © 2000 by Monica Yuskaitis Round these numbers to the nearest hundred. 2, 1 3 9 1 9, 7 4 5 2 8 2 3, 1 9 7 2, 1 0 0 1 9, 7 0 0 3 0 0 3, 2 0 0

25. Copyright © 2000 by Monica Yuskaitis Round these numbers to the nearest thousand. 2, 8 3 9 1 9, 4 4 5 8, 9 8 2 4 3,1 9 7 3, 0 0 0 1 9, 0 0 0 9, 0 0 0 4 3, 0 0 0

26. Copyright © 2000 by Monica Yuskaitis Credits Illustrations from: Illustrations from: n Clipart from ClickArt 125,000 Deluxe Image Pak, T/Maker Co., Broderbund Software, Inc.