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Lesson Plan
Curated OER

Estimating Sums and Differences

For Teachers 3rd - 4th
In this math worksheet, learners learn to estimate sums and differences by completing step by step exercises. There is one word problem which is the example, and then students can choose from other estimation activities to do with a...
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Worksheet
Curated OER

Estimating Fractions

For Students 6th - 7th
In this estimating fractions worksheet, learners solve 20 various problems that include estimation in each. They estimate the sum or difference in each of the problems shown on the sheet. Students calculate each mixed number into a...
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Worksheet
Curated OER

Rounding Decimals to Hundredths (A)

For Students 4th - 5th
In this math worksheet, students answer 60 rounding problems. All given numbers have 4 decimal places and are rounded to the nearest hundredth.
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Worksheet
Curated OER

Rounding to Place Value

For Students 3rd - 6th
In this rounding worksheet, students round 24 numbers to the nearest tens, hundreds, thousands, or ten-thousands place. The numbers range from 2- to 5-digits.
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Worksheet
Curated OER

Rounding Up or Down?

For Students 4th - 6th
In this rounding activity, students fill in columns, rounding given numbers both up and down; the correct answer is given in a 3rd column. A reference web site is given for additional activities.
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Worksheet
Curated OER

Estimating Sums and Differences

For Students 4th
For this estimation worksheet, 4th graders estimate the sum or difference of 15 math problems. Students write their answers underneath each math problem on the worksheet.
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Lesson Plan
Teacher Created Materials

Estimating Quotients

For Teachers 5th - 6th Standards
In this math worksheet, students learn to estimate a quotient to see if an answer is reasonable. They complete the long division to get an exact answer in 18 problems. Detailed directions are also given on how to check a division...
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Activity
Illustrative Mathematics

Hand Span Measures

For Students 2nd Standards
How long is your hand span? Young mathematicians measure their hand span from pinky tip to thumb tip using a centimeter ruler. After rounding to the nearest whole centimeter, learners plot their data on a line plot.
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Worksheet
Kuta Software

Proportion Word Problems

For Students 6th - 9th
In this proportion word problem worksheet, students read real-life problems and solve proportions. This four-page worksheet contains 18 problems. Answers are provided on the last page.
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Worksheet
Math Doctor

Chapter 5: Decimal Notation

For Students 5th - 8th Standards
Explore all things decimal in this thorough series of introduction activities. Including scripting for the teacher and detailed descriptions and examples, the plan begins by reviewing the basics of place value and writing fractions as...
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Lesson Plan
Education Development Center

Micro-Geography of the Number Line

For Teachers 5th - 8th Standards
Young mathematicians dive into the number line to discover decimals and how the numbers infinitely get smaller in between. They click the zoom button a few times and learn that the number line doesn't just stop at integers. Includes a...
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Worksheet
Curated OER

Everyday Mathematics: Ballpark Estimates

For Students 2nd - 3rd
In this estimating practice worksheet, students sharpen their math skills as they learn how to make likely estimates and try the 2 extra practice activities.
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Worksheet
Curated OER

Estimating 0-10

For Students 1st - 2nd
In this estimating worksheet, students estimate the whole numbers that arrows on a number line are pointing to, 0-10. A website reference for additional activities is given.
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Worksheet
Curated OER

Estimating Quotients

For Students 6th - 7th
In this estimating quotients worksheet, students solve 20 different problems that include estimating a variety of quotients in each. They divide each whole number and then estimate the answer in each problem to the nearest whole number.
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Worksheet
Curated OER

Round to the Nearest Thousand

For Students 2nd - 3rd
In this rounding worksheet, students examine 9 different numbers, write the 2 numbers each number falls between and then round each number to the nearest thousand. Next, students solve 15 fill in the blank problems where they round...
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Worksheet
Curated OER

Rounding Up Numbers

For Students 3rd - 4th
In this rounding worksheet, students round a set of 40 numbers to the nearest 100. An answer key is included. A website reference is given for additional resources. 
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Assessment
Noyce Foundation

Cat Food

For Teachers 6th - 7th Standards
Determine the right mix of cans of cat food. The resource consists of an assessment task to determine the cost to feed two cats for a specific number of days and requires scholars to interpret remainders within a context. The resource...
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Lesson Plan
Google

Surveys and Estimating Large Quantities

For Teachers 6th - 12th Standards
Looking for an estimation activity a bit more involved than the typical "guess the number of jellybeans in the jar" game? Here, learners use a picture to estimate the number of people at a large event, look for potential problems with...
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Assessment
Los Angeles County Office of Education

Assessment for the California Mathematics Standards Grade 3

For Students 3rd Standards
Assess scholars' knowledge with a 22-page assessment that covers place value, patterns, probability, estimation, measurement, geometric figures; and their ability to add, subtract, multiply and divide proficiently. 
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Worksheet
Curated OER

Estimating Heat Changes during Reactions Using Bond Energies

For Students 9th - Higher Ed
For advanced chemists, this worksheet examines heat change during chemcial reactions. Alkanes are examined first. Learners calculate the energy released or needed during a reaction.
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Worksheet
Curated OER

Round Each Number to the Nearest Ten

For Students 1st - 4th
In this rounding instructional activity, students practice rounding numbers to the nearest ten. There are 8 numbers that students round. The answers are included at the bottom half of the page.
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Lesson Plan
Curated OER

Mystery Stars: Estimating Whole Numbers Using Fractions Shown on Sectors of a Circle

For Teachers 4th - 5th
In this set of fraction worksheets, students cut out 6 pages of circles that show fractions with stars covering different sections of circles. They show one section of the circle in order to estimate the whole number of stars by looking...
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Interactive
Curated OER

Basics of Estimation

For Students 5th - 10th
For this estimation worksheet, students complete multiple choice questions about rounding and the proper sequence of estimation. Students complete 10 questions total.
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Worksheet
Curated OER

Numerical Analysis/ Examples of Round Off Errors

For Students Higher Ed
In this math instructional activity, students practice computing the errors for rounding off and use the skill of analysis to find the true solutions.

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