1. Estimating Sums to the Nearest 10 and 100
Copyright © 2010 Kelly Mott

2. Part 1:Estimating Sums to the Nearest Ten
Copyright © 2010 Kelly Mott

3. Practice # 1: Round to the nearest ten. Estimate each sum.
_ _
_ _
_ _
_ _ + + + +
Steps:
1. Round each to the nearest 10.
2. Then add.
Copyright © 2010 Kelly Mott

4. Practice # 2: Round to the nearest ten. Estimate each sum.
_ _
_ _
_ _
_ _ + + + +
Steps:
1. Round each to the nearest 10.
2. Then add.
Copyright © 2010 Kelly Mott

5. Practice # 3: Round to the nearest ten. Estimate each sum.
_ _
_ _
_ _
_ _ + + + +
Steps:
1. Round each to the nearest 10.
2. Then add.
Copyright © 2010 Kelly Mott

6. Practice # 4: Round to the nearest ten. Estimate each sum.
_ _
_ _
_ _
_ _ + + + +
Steps:
1. Round each to the nearest 10.
2. Then add.
Copyright © 2010 Kelly Mott

7. Practice # 5: Round to the nearest ten. Estimate each sum.
_ _
_ _
_ _
_ _ + + + +
Steps:
1. Round each to the nearest 10.
2. Then add.
Copyright © 2010 Kelly Mott

8. Part 2:Estimating Sums to the Nearest Hundred
Copyright © 2010 Kelly Mott

9. Practice # 1: Round to the nearest 100. Estimate each sum.
_ _ _
_ _ _
_ _ _
_ _ _ + + + +
Steps:
1. Round each to the nearest 100.
2. Then add.
Copyright © 2010 Kelly Mott

10. Practice # 2: Round to the nearest 100. Estimate each sum.
_ _ _
_ _ _
_ _ _
_ _ _ + + + +
Steps:
1. Round each to the nearest 100.
2. Then add.
Copyright © 2010 Kelly Mott

11. Practice # 3: Round to the nearest 100. Estimate each sum.
_ _ _
_ _ _
_ _ _
_ _ _ + + + +
Steps:
1. Round each to the nearest 100.
2. Then add.
Copyright © 2010 Kelly Mott

12. Practice # 4: Round to the nearest 100. Estimate each sum.
_ _ _
_ _ _
_ _ _
_ _ _ + + + +
Steps:
1. Round each to the nearest 100.
2. Then add.
Copyright © 2010 Kelly Mott

13. Practice # 5: Round to the nearest 100. Estimate each sum.
_ _ _
_ _ _
_ _ _
_ _ _ + + + +
Steps:
1. Round each to the nearest 100.
2. Then add.
Copyright © 2010 Kelly Mott

14. Copyright © 2010 Kelly Mott