Instructional Video4:38
Curated Video

Assessing the Reasonableness of Products Using Front End Estimation

K - 5th
In this lesson, students will learn how to assess the reasonableness of multiplication problem answers using front end estimation. They will practice keeping the first digit of both factors the same and then multiplying to check if the...
Instructional Video4:16
Curated Video

How to Estimate in Maths #21

9th - Higher Ed
This video covers how to get a quick but rough answer by estimating. This involves rounding the figures you're given to make them easier to work with.



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Instructional Video4:04
Curated Video

Ballparking: Solving Problems Quickly and Intelligently

Higher Ed
In this video, the technique of ball parking is introduced as a way to solve problems quickly and efficiently. It is demonstrated through two examples, one involving estimating the most popular food in the world and the other involving...
Instructional Video4:55
Curated Video

Solve Problems With The Ball Parking Technique

Higher Ed
Use ballparking when you have no time to solve the complete problem. Join us at href='https://www.patreon.com/sprouts' target='_blank' atl='nofollow'>at and check out the GMAT training app from The Economist
Instructional Video4:19
Curated OER

How Do You Estimate a Quotient Using Compatible Numbers?

4th - 7th
Learn how to do approximations to find a quotient. Given some large numbers to divide, how can this problem be tackled? It's often a good idea to do an approximation first as this can help to be in the ballpark in finding the solution....