Curated OER
Estimating Sums and Differences
In this math worksheet, pupils 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 partner.
Curated OER
Estimating with Rational Numbers
Middle schoolers explore the concept of rounding. In this rounding lesson, students round fractions and mixed numbers. Middle schoolers estimate the sums, differences, products, and quotients of rounded fractions and mixed numbers.
Curated OER
Estimate the Sum
In this estimating sums worksheet, students round each number in addition problems to the nearest hundred and solve. Answers are included on page 2.
Curated OER
Estimate Differences
In this estimating differences instructional activity, students estimate differences by rounding to the nearest hundred. Answers are included on page 2.
Curated OER
Estimate Sums and Differences
In this word problem worksheet, 4th graders answer 6 word problems by writing mathematical sentences that show each answer. They work with distances and time.
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...
EngageNY
Estimating Centers and Interpreting the Mean as a Balance Point
How do you balance a set of data? Using a ruler and some coins, learners determine whether the balance point is always in the middle. Through class and small group discussions, they find that the mean is the the best estimate of the...
EngageNY
Estimating Probabilities by Collecting Data
Take a spin to determine experimental probability. Small groups spin a spinner and keep track of the sums of the spins and calculate the resulting probabilities. Pupils use simulated frequencies to practice finding other probabilities to...
Curated OER
Rounding to Add
In this rounding to add worksheet, students round addends to the nearest ten and estimate sums for 14 problems. One example is completed; a website reference is given.
Curated OER
Estimate the Difference
In this estimation worksheet, students complete ten estimation problems by rounding each number to the nearest ten. These are all two-digit subtraction problems.
Curated OER
Estimating and Rounding
In this estimation and rounding activity, learners solve ten multiplication problems by using estimation and rounding skills. This is an interactive activity.
Curated OER
Estimating Sums
In this estimating to ten and hundred activity, 3rd graders estimate 16 math problems by rounding to the nearest ten and 4 by rounding to the nearest hundred. Students answer 1 word problem and 2 multiple choice questions relating to...
Curated OER
Estimating Sums and Differences
In 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.
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
Estimating with Decimals
In this decimal worksheet, students estimate sums, differences, products or quotients in a set of 35 decimal problems. Text pages are given, but text name is not included.
Curated OER
Estimating and Counting Money
Learners explore the concepts of estimating and rounding. In this estimating and rounding lesson, students play a game of tic-tac-toe. Learners pick items and must estimate their cost by rounding. Students estimate the costs of pretend...
Curated OER
Estimation 2: Sum and Difference
In this estimation worksheet, students mentally solve eight multiple choice problems involving addition and subtraction. They arrive at their answers through the process of using compatible numbers or rounding. Students read story...
Curated OER
Show What You Know: Estimate: Enrichment
For this estimating sums worksheet, learners write a greater than or less than sign to solve the addition sentences. Students first use estimation to help them compare the numbers.
Curated OER
Rounding
First graders round to estimate greater sums. After a lecture/demo, 1st graders complete a web instructional activity on estimation. They practice rounding to the nearest hundred using a restaurant take-out menu.
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
Equal Estimates- Decimals
In this decimal estimation instructional activity, students estimate a set of addition and subtraction problems, rounding to the nearest whole number, then place each problem in the box that contains its estimated sum or difference.
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
Estimating and Rounding-Pretest Questions
In this estimating and rounding instructional activity, students complete a set of 10 multiple choice questions. Students may click on a link for answers or to print page.
Curated OER
Rounding to Add
In this rounding to add worksheet, students round addends to the nearest ten and estimate sums. A website reference for additional resources is given.