Curated OER
Rounding up or Rounding down
Teach the class how to estimate by rounding to the nearest 10. They review the rules for rounding, try rounding a few numbers using a number line, then round on their own. This is a good introduction that explains how to round and why we...
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Zeros and Blackbirds
Fifth graders convert kilometers to miles and calculate the range that historical aircraft can travel. They choose destinations by distance that can be traveled without refueling.
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Further Rounding
For this rounding off worksheet, students determine if 8 statements could be rounded off to the nearest ten, hundred, thousand, ten thousand, hundred thousand or million. Students draw and complete a table of 5 numbers, rounding the...
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Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences lesson, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
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Estimating Differences (Online Interactive)
In this estimating worksheet, students solve 20 problems in which two or three digit numbers are subtracted after rounding. Students round each number and then give an estimated answer. This is an online interactive worksheet.
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Study Buddies: Dividing by One-Digit Divisors
Fourth and fifth graders learn long division by one digit divisors. They learn the steps: divide, multiply, subtract, compare, bring down, repeat. Pupils solve five problems in a step by step format.
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Estimation and Pattern Discovery
Students collect sunflower heads from their community garden. They estimate its seed count using different strategies. They graph their estimations on a graph and use calculators to find the actual total.
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Around and Across
Tenth graders investigate the circumference and diameter of a circle. In this geometry lesson plan, 10th graders relate circumference to diameter. They create a scatter plot to estimate the value of pi.
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Units Of Measure
Pupils investigate concepts relating the use of the metric system of measurement. They practice the skill of estimating units and especially which ones to use in certain problems for the most reasonable answer. The lesson includes...
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Estimating With Decimals
How can we estimate the answers when working with decimals? That's what the question is as the class reviews two-digit decimal addition. Have them estimate by rounding to a whole number either before or after they have completed their...
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Study Buddies: Adding Decimals
For this math worksheet, students will work with a coach to add numbers with decimals to the hundredths place. Students will follow a step-by-step process and notes are provided for the coach.
Math Mammoth
Mental Math in Percent Problems
In this math worksheet, learners are given 21 percentage problems which they are to work out mentally. There are story problems, tables and simple conversion.
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Dividing by Two-Digit Divisors
In this math worksheet, students collaborate with a "study buddy" or "coach" to learn to divide by 2 digit divisors. Students follow the steps to go through the long division process. There are 4 problems.
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Take Away Bar 2
Students use an Internet tool, The Take-Away Bar" to solve subtraction problems. They use mental strategies to subtract a two-digit number from a larger two-digit number. Students write and solve subtraction problems. They describe...
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Searching for Pattern
In these activities with patterns worksheets, students use the rule for 1- or 2- digit number chains, participate in a round robin tournament, identify rhyming patterns and chain letters. Students answer 15 questions.
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Estimation
Fourth graders view a variety of rice products and calculate their cost. For this rice math lesson, 4th graders estimate cost and multiply to find 8 of each item. Students estimate using different amounts of rice products. Students...
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Make a Match
Second graders examine the relationship between addition and subtraction. For this number sense lesson, 2nd graders practice their computation skills and use various strategies (including manipulatives and calculators) to...
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Calculator
In this mathematical calculations worksheet, 4th graders complete 12 multiplication problems by using a calculator. Students also develop an estimate for these problems.
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Springbreak Trip
Twelfth graders plan and calculate the cost of taking a specific Spring Break trip, with a certain budget and given set costs. they determine miles traveled, gas costs, hotel expenses, etc.
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Why Is My Bread Fuzzy?
Students explore the organisms that live on counters or surfaces in the classroom. In this mold experiment, students observe mold in different conditons. Students record their observations on a worksheet. Students understand how...
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Vegie Gardening
Learners investigate the concept of Veggie Gardening and develop the plans for a successful yield of crops. They answer some practical questions and then apply the information to the horticulture garden. The project includes finding the...
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Basics of Estimation
In 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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Estimating With Decimals
For this math worksheet, students complete 14 problems where they estimate money amounts and multiplication products using numbers with decimals. Examples are provided in this well-designed worksheet.
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Accuracy of Calculations
For this accuracy of calculations worksheet, learners solve and complete 4 different types of problems. First, they estimate the solution of the calculations shown. Then, students find the maximum and minimum possible values for each...