Estimating - CCSS 7.NS.A.1

Links verified on 10/23/2025

1. Comparison Estimator.
Click Image to Enlarge		Compares two sets of objects by estimating. (Other related resources are available under the learner tab.)  SEE MORE
2. Estimate Cube Roots.
Click Image to Enlarge		Practice estimating cube roots. A scratchpad is available to doodle over the top of the question. SEE MORE
3. Estimate Division.
Click Image to Enlarge		Estimate the answer for each question. SEE MORE
4. Estimate Positive and Negative Square Roots.
Click Image to Enlarge		Practice estimating positive and negative square roots. Scratch pad available to doodle over the problem. SEE MORE
5. Estimating Angles.
Click Image to Enlarge		This game offers students an opportunity to improve their ability to estimate angles. You can either play on your own or challenge a friend. The closer you get to the target angle the more points you will score. To change the level of difficulty, click on the purple cog. SEE MORE
6. Estimating by Rounding.
Click Image to Enlarge		Addition with regrouping. Lesson with practice problems.  SEE MORE
7. Estimating by Rounding.
Click Image to Enlarge		Subtraction with regrouping. Lesson with practice problems.  SEE MORE
8. Estimating Products.
Click Image to Enlarge		This activity requires you to to estimate the answers to multi-digit multiplication problems. SEE MORE
9. Estimating Sums (Sorting Game).
Click Image to Enlarge		How quickly can you decide which sums add up to 500, 700, 900, and 1000 in this group sort. SEE MORE
10. Estimation Valley Golf.
Click Image to Enlarge		A golf game in which the better you estimate, the more accurate your shot. Play our nine-hole course called Estimation Valley, or, go for the six-hole course or putt-putt. This game works on all devices. Demo video available.  SEE MORE
11. Estimator.
Click Image to Enlarge		Practice estimation skills by determining the number of objects, length, or area. (parameters: error tolerance) Additional related resources located under the learner tab.  SEE MORE
12. Front End Estimation of Sums.
Click Image to Enlarge		Front end estimation lesson and practice problems. No hints or clues given.  SEE MORE
13. Glowla's Estimation Contraption.
Click Image to Enlarge		Glowla has created a machine will show you a bunch of numbers. You need to type in an estimate of what those numbers would add up to. The secret to solving this puzzle is to round the numbers before adding them together. SEE MORE
14. Maximum Capacity.
Click Image to Enlarge		Play the role of an elevator attendant who must bring as many gorillas as possible to the eighth floor for the annual Gorilla’s Ball at the Jungle Hotel! The only problem is, the doors to the ball close in three minutes, and there are still hundreds of anxious gorillas waiting. Bring as many as you can to the eighth floor in three minutes. Check the weight capacity at the top of the elevator. It changes with each trip.  SEE MORE
15. More or Less Estimator.
Click Image to Enlarge		Similar to the Estimator activity but states a quantity and asks the user to estimate whether the set of objects is more or less than the number given.  SEE MORE
16. Soccer Math - Estimating.
Click Image to Enlarge		A fun way to practice estimating sums, differences, products and quotients. There are different levels of difficulty in each exercise making the game appropriate for a variety of students and grades. The game offers a fun penalty shot feature after players get five correct in a row. SEE MORE
17. Spy Guys Interactive - Rounding Numbers.
Click Image to Enlarge		Watch the video and respond at various places Lesson 9. This video includes sections which ask students to input responses.  SEE MORE
18. Weigh the Wangdoodles.
Click Image to Enlarge		Your job is to find the weight of each Wangdoodle using the information provided by the scales. To be successful, you will have to make sure that the weight you assign to each Wangdoodle works on each scale. This activity is a fun but challenging introduction to multiple algebraic equations.  SEE MORE