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To estimate the number of a large group of items, take a smaller group of the items you are estimating and see what it looks like. Get a feel for what 50 looks like or 100. Then when you look at a larger amount, you can make an educated guess.

Estimating Length Worksheets

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Basic Lesson
Demonstrates the basic concept of mathematical substitution visual. Also includes practice problems.
Standard: MATH 4
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Intermediate Lesson
Uses larger more abstract concepts than are presented in the basic lesson .
Standard: MATH 4
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Independent Practice 1
20 problems ask you to replace a string for apples. The answers can be found below.
Standard: MATH 4
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Independent Practice 2
Estimate length with the use of a key. Includes 20 practice problems.
Standard: MATH 4
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Estimating Length Homework Worksheet
Contains 12 problems. Two examples are provided.
Standard: MATH 4
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Estimating Length Quiz
10 problems that test introductory measurement and estimation skills.
Standard: MATH 4
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Answers for the homework and quiz.
Answers for both lessons and both practice sheets.

Tips For Guessing How Many Jellybeans Are In A Jar
Learn how to make a good estimate of how many jellybeans are in jar.
View Math Article
The only way for you to be successful at this is through practice.
View Math Article