Curated OER
Grade 4 Math: Whole Numbers 2
Fourth graders round off two specific numbers to either the nearest thousand, hundred, ten thousand, ten and/or million.
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Rounding Off Numbers
For this rounding off worksheet, 6th graders practice rounding off 30 specific numbers to the nearest 1,000, 10,000 and/or 100,000.
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Playing with Remainders
Fifth graders explore how people handle remainders in real life. In this remainders math lesson, 5th graders participate in skits to show what to do with remainders. Students complete worksheets with word problems.
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Approximate Answers by Rounding
In this rounding off worksheet, students calculate the approximate answers for 10 addition, division or subtraction math problems, questions and/or statements.
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Math Cross--Puzzle #30
In this money, rounding, time and measurement worksheet, students problem solve twenty-eight math problems or word problems involving addition, subtraction, multiplication and division.
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Rounding to the Nearest Million
In this rounding off worksheet, students round off 7 South American countries to nearest million people and answer 4 word problems.
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Rounding to the Nearest Million
In this rounding off worksheet, students round off 5 numbers to the nearest million and redraw a chart rounding off 5 areas to the nearest million square km.
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Further Rounding
In 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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Rounding to the Nearest Ten Thousand
In this rounding off instructional activity, students write 15 numbers or questions to the nearest whole ten thousand. Students utilize a number line to assist them in rounding off numbers.
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Math Cross--Puzzle #16
In this rounding activity, students fill in a crossword puzzle as they solve twenty-eight addition, subtraction and multiplication math problems.
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Rounding Numbers
In this rounding numbers worksheet, pupils, with a partner, problem solve and calculate the answers to eighteen mathematical exercises.
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Rounding To The Nearest Ten And Hundred
In this rounding to the nearest ten and hundred worksheet, students, with a partner, calculate the answers to nine word problems or mathematical equations dealing with estimation.
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Metric Conversion
In this metric conversion worksheet, pupils problem solve fourteen exercises where they convert fractions to decimals and decimals to fractions.
University of California
University of Calilfornia: Significant Figures Ii
This site from the University of California provides a lengthy and intelligent discussion of sig figs, absolute and relative precision, accuracy, precision in calculations, rounding off, and the whole shooting match of how we report what...
CK-12 Foundation
Ck 12: Arithmetic: Product Estimation With Mixed Numbers/fractions
[Free Registration/Login may be required to access all resource tools.] Estimate products and quotients of fractions and mixed numbers.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Table of Contents
This website from The Math Page explains some helpful hints about how to do mental math.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Multiplication: Mental Calculation
If you are looking for a website that explains and defines the basics of mental multiplication with helpful hints then you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
BBC
Bb Ci: Review Significant Digits
BBCi presents a test prep review ("revision") section on significant digits and on approximating an answer by rounding in order to work with an easy number. Click on "Test Bite," on the last page to get an interactive quiz.