Curated OER
Estimating Sums and Differences
For this math worksheet, students 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...
Curated OER
Estimate Sums and Differences
For this word problem worksheet, 4th graders answer 6 word problems by writing mathematical sentences that show each answer. They work with distances and time.
Curated OER
Estimating Fractions and Sums
What is a quick comparison, and how can it help you estimate sums and differences? For this estimation worksheet, learners estimate fractions in addition problems. They complete four problems where they estimate the sums after reviewing...
Illustrative Mathematics
Calculating and Rounding Numbers
Mathematicians need to know that not all numbers are rational. We approximate irrational number with rational numbers. That is why a calculator may be misleading. This task give learners an opportunity to see how rounding a number and...
Alabama Learning Exchange
Estimation Station: Why Estimating is Better than Guessing
Youngsters discover the difference between estimating and guessing. They estimate how many items are contained in a jar as they read a story. After the story, pupils discover the differences between estimating and guessing and create a...
CK-12 Foundation
Tangent Line Approximation: Estimating Square Roots
Estimating a square root is as easy as evaluating a linear equation. Using the derivative of the square root function, pupils calculate an estimation of square roots. Class members determine the equation of the tangent line at the value...
Curated OER
Rounding Numbers
Fifth graders demonstrate rounding numbers to a sensible level of accuracy and in context. They discuss rounding numbers for newspaper headlines, complete a table of grocery items that need to be rounded, and observe and demonstrate...
Curated OER
Estimate Differences
In this estimating differences worksheet, students estimate differences by rounding to the nearest hundred. Answers are included on page 2.
Curated OER
Subtracting Fractions - Unequal Denominators
Subtracting fractions that have unequal denominators is a tricky process. The lesson utilizes fraction bars as a manipulative, in order to understand subtracting fractions and estimating differences. After completing three activities in...
University of Waterloo
Rounding and Estimating 1: Introduction
Pupils practice mental math skills in math drills. They play the online interactive game "Rounding Off" to practice rounding off different numbers. Afterward, they complete a paper based follow up exercise for reinforcement.
Curated OER
Estimating and Counting Money
Students explore the concepts of estimating and rounding. In this estimating and rounding activity, students play a game of tic-tac-toe. Students pick items and must estimate their cost by rounding. Students estimate the costs of pretend...
Curated OER
Rounding To The Nearest Ten And Hundred
In this rounding to the nearest ten and hundred worksheet, pupils, with a partner, calculate the answers to nine word problems or mathematical equations dealing with estimation.
Curated OER
In Round Numbers
Students explore the concept of rounding. In this rounding lesson, students use their calculator to round three digit numbers to the nearest 10 or nearest 100. Students round fractional numbers to the nearest tenth, hundreth, and...
Curated OER
Mystery Jars
Youngsters discover ways to estimate. They will use two jars with large and small items and estimate the number of items. Then record their estimate and explain why they answered the way they did. They try this experiment with different...
CK-12 Foundation
Large Decimal Rounding to Decimal Representations: Weighing a Whale
An interactive challenges mathematicians to round large numbers with help from a large scale that measures the weight of a blue whale. The practie's five questions include multiple-choice, fill-in-the-blank, true or false, and an open...
Curated OER
Estimating Fractions
In this estimating fractions worksheet, students 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...
Curated OER
Estimating Sums and Differences
In this estimation activity, 4th graders estimate the sum or difference of 15 math problems. Students write their answers underneath each math problem on the activity.
For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate simple sums.
Curated OER
Estimating and Testing Steps
Students predict how many steps they think it will take them to get from the front of the room to the back. They record predictions on paper and then into database and then actually test by walking foot to foot to their destination...
Curated OER
Rounding Tens to Thousands
In this rounding worksheet, students solve 20 different problems that include rounding various numbers. First, they round some numbers to the nearest hundred. Then, students round different numbers to the nearest thousand. And finally,...
Curated OER
Estimating Solutions to Word Problems
Fourth graders explore number sense by completing word problems in class. In this estimation lesson, 4th graders define terms such as sum, difference, estimate and best. Students complete estimating worksheets based on the concept of...
Curated OER
Quiz: 15 Estimating Fractions Sums and Differences
In this estimating fraction sums and differences instructional activity, students complete a total of 15 problems. Answers are included on page 2. Labeled as quiz but suitable for practice.
Curated OER
Estimate Differences
In this estimation worksheet, students solve a total of 6 word problems that involve rounding to a given place value and estimating.
Curated OER
Estimating and Rounding-Pretest Questions
In this estimating and rounding worksheet, students complete a set of 10 multiple choice questions. Students may click on a link for answers or to print page.