Rounding and Estimating

Links verified on 7/27/09

1. Basket Math provides rounding practice
2. Comparison Estimator - compares two sets of objects
3. Estimating sizes of objects - Guess which length or distance applies to the object.
4. Estimating by Rounding - addition with regrouping
5. Estimating by Rounding - subtraction with regrouping
6. Estimating and rounding decimals - a lesson, examples, and an interactive practice page
7. Estimating Sum - no hints or clues given
8. Estimation Valley Golf - Complete the course using estimation skills in as few strokes as possible.
9. Estimator - Practice estimation skills by determining the number of objects, length, or area.
10. Guess the Number - developing skills in halving and estimation
11. Home Run Derby Math - you don't have time to add, just estimate the correct answer [ addition, subtraction, or multiplication ]
12. Laser Beams - rounding decimals to the nearest whole number - three levels are available; rounding, rounding and computing sums and differences, and rounding and computing with all four operations
13. Let's Go Shopping - estimate by rounding to the nearest dollar as they shop
14. More or Less Estimator - states a quantity and asks the you to estimate whether the set of objects is more or less than the number given.
15. Round About - estimate by rounding
16. Round the decimal to the nearest whole number - matching, flashcards, or concentration (from Quia)
17. Rounding Off - three levels are available in this game from BBC Education
18. Rounding to nearest ten
19. Rounding to nearest hundred
20. Rounding to nearest thousand
21. Round the decimal to the nearest whole number (from Quia)
22. The Seashell Rounding Activity Page - Look at the number on each shell. Click on the nearest ten.