Curated OER
Fancy Foot- Estimating Whether a Line is Longer or Shorter Than a Foot
In this fancy foot estimation and measurement activity, 1st graders examine 3 curved lines and estimate whether they are longer or shorter than a foot. They use a foot-long string to check each answer.
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Rounding and Estimating
Fourth graders complete math problems through rounding and estimating. They visit a given website where students select answers to increasingly harder problems. Students complete quizzes to estimation problems. Afterwards, they...
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Estimating Sums and Differences
In this estimation of sums and differences worksheet, 7th graders solve 20 different problems that are related to estimation of numbers. They add or subtract each problem as shown. Then, students estimate the sums and differences for...
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Estimate Products: Reteach
In this estimating products worksheet, students review two steps to help estimate products. Students then estimate the products by rounding the factor greater than 10 to its greatest place.
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Counting Blood Cells
Students observe number sense by participating in an estimation activity. For this blood cells lesson, students identify the importance of blood cells in the human body and discuss how tiny they are. Students utilize paper dots as a...
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Activity: Estimate Time
In this estimating time review worksheet, students practice their estimation skills as they estimate how many times they can do 3 activities in 1 minute. Students check their work and then identify things that take them 30 seconds, 5...
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Estimating Decimals
In this estimation activity, students learn to estimate with decimal numbers by using rounding or compatible numbers. There are 10 problems.
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Rounding Decimals to Tenths (J)
In this rounding numbers learning exercise, students practice their math skills as they examine 60 decimal numbers and round them to nearest tenth place.
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Rounding Decimals to Hundredths (C)
In this rounding numbers worksheet, students practice their math skills as they examine 60 decimal numbers and round them to nearest hundredths place.
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Rounding Decimals to Tenths (H)
In this rounding numbers worksheet, students practice their math skills as they examine 60 decimal numbers and round them to the nearest tenth place.
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Rounding Decimals to Tenths (I)
In this rounding numbers worksheet, students practice their math skills as they examine 60 decimal numbers and round them to nearest tenth place.
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Estimate Using Tens
In this estimate using tens worksheet, 2nd graders match three sets of toys with 3 jars by estimating using tens and reading the label on the jar.
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Rate Equation
In this rate equation worksheet, students use Euler's method to estimate the value of rate equations. They use the piecewise linear function approximation to determine the solution of an initial value problem. This two-page worksheet...
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Estimating
In this estimating worksheet, students study the models of 15 dots arranged in a triangle, circle and pentagon. In each of 3 problems, students ring the dotted shapes that show more than 15 and cross out the dots that show less.
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Decision Time
In this estimating practice worksheet, students examine 3 groups of objects and estimate and check how many objects there are in each group. Students also respond to 1 short answer question.
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Dog Lot Math
Students use their problem-solving skills to answer math problems. They determine the cost of feeding sled dogs. They share their answers with the class.
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Mental Money
Students access prior knowledge to round numbers and add decimals. In this mental math lesson plan, students share the book Betcha and calculate estimates for three jars based on the book. Students calculate money answers based on coins...
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Euler Encore 1
In this math worksheet, students use Euler's Method to solve differential equations. They are given an equation to graph (y'). Students sketch that equation as well as the related equation (y). They find the area of given rectangles and...
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.
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Homework Handout for Class 28
In this calculus learning exercise, students are given 3 short-answer problems regarding Newton's method, generalized Babylonian algorithms and estimation.
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Calculator Spelling
Sixth graders practice creating and solving number sentences on a calculator. They interact with number facts, their properties, algorithms and estimation. Each student recognizes inverse relationships of addition, subtraction,...
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Estimating Sums
For this estimating to ten and hundred worksheet, 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...
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Ratios, Proportions, and Percents
Eighth graders use ratios and proportions to solve real-life problems. In this using ratios and proportions to solve real-life problems lesson, 8th graders estimate the cost of a road trip. Students estimate the distance...
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Decimals
In this decimals worksheet, 5th graders solve 20 different problems that include adding and subtracting various decimals. First, they add or subtract the decimals like they would whole numbers. Then, students line up the decimal points...