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/Home/Mathematics/Arithmetic/Estimation & Rounding Aplusmath.com : Flashcards : Rounding Flashcards Votes:0 Flashcards Game Room Homework Helper Worksheets Rounding Flashcards Correct Attempted Score Answer : Message Max Value : 100(one hundred) 1,000(one thousand) 10,000(ten thousand) 100,000(one hundred thousand) 1,000,000(one million) 10,000,000(ten million) Home | Comments | FAQ | Sponsors Copyright © 1998-2006 Aplusmath.com Read More Go to Site Decimals, Whole Numbers, and Exponents Votes:0 Decimals, Whole Numbers, and Exponents Decimal numbers Whole number portion Expanded form of a decimal number Adding decimals Subtracting decimals Comparing decimal numbers Rounding decimal numbers Estimating sums and differences Multiplying decimal numbers Dividing whole numbers, with remainders Dividing whole numbers, with decimal portions Dividing decimals by whole numbers Dividing decimals by decimals Exponents (powers of 2, 3, 4, ...) Factorial notation Square roots Math Contests School League Competitions Contest Problem Books Challenging, fun math practice Educational Software Comprehensive Learning Tools Visit the Math League Decimal Numbers Decimal numbers such as 3.762 are used in situations which call for more precision than whole numbers provide. As with whole numbers, a digit Read More Go to Site Estimating a Difference Votes:0 Estimating a Difference Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Estimating a difference by rounding A quick way to estimate the difference between two numbers is to round each number and then subtract the rounded numbers. This probably won't be the exact answer but it may be close enough for some purposes. How to Estimate a difference by rounding. Round each term that will be subtracted Subtract the rounded numbers Return to Top Estimate the Difference between the two Numbers? &nbsp - &nbsp You have correct and incorrect. This is percent correct Return to Top Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for each correct answer. Play longer by getting more correct. How fast can you Read More Go to Site Estimating a Sum Votes:0 Estimating Sums Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Estimating a sum by rounding A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers. This probably won't be the exact answer but it may be close enough for some purposes. How to Estimate a sum by rounding. Round each term that will be added Add the rounded numbers Some uses of rounding Checking to see if you have enough money to buy what you want. Getting a rough idea of the correct answer to a problem Return to Top Estimate the Sum of the two Numbers? &nbsp + &nbsp You have correct and incorrect. This is percent correct Return to Top Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarde Read More Go to Site Estimating and Counting Money Votes:0 Estimating and Counting Money Estimating and Counting Money Omega L. Minor-Clark R. Nathaniel Dett Elementary School P.O. Box 608247 2306 W. Maypole Chicago IL 60660 Chicago IL 60612 (312)534-7160 Objectives : The purpose of this lesson is to review estimating and rounding to the nearest dollar as well as gain skills and practice in counting money. The students will define the meaning of estimate and rounding. The students will gain experience in estimating sums and products. Materials Needed : Toy cash register, game sheets, identification cards, play money, and Jewel Food Store adds. Strategy : The students will play "Estimate the Cost" - a game similar to tic-tac-toe. At the top of this game sheet are pictures of six different items with the price tags attached. There are two game board Read More Go to Site Estimation Votes:0 Sorted by Grade Level Study Basic Math Skills Unlimited Interactive Practice Explanations and Examples Challenge Games Hundreds of Pages Kindergarten | First | Second | Third | Fourth | Fifth | Sixth | Seventh | Eighth Contact AAAMath Buy the AAAMath CD Sorted by Subject Addition Algebra Comparing Counting Decimals Division Equations Estimation Exponents Fractions Geometry Graphs Measurement Mental Math Money Multiplication Names of Numbers Patterns Percent Place Value Practical Math Properties Proportions Statistics Subtraction Please tell others about this site. Estimation - Table of Contents Estimation - Topics Rounding Numbers: Rounding Decimals To: Rounding Decimals Estimating Return to Top Estimation - Lessons Rounding Numbers: Rounding Rounding to the Nearest Ten Rounding to the Nea Read More Go to Site Fractions Votes:0 Fractions Prime numbers Greatest common factor Least common multiple What is a fraction? Equivalent fractions Comparing fractions Converting and reducing fractions Lowest terms Improper fractions Mixed numbers Converting mixed numbers to improper fractions Converting improper fractions to mixed numbers Writing a fraction as a decimal Rounding a fraction to the nearest hundredth Adding and subtracting fractions Adding and subtracting mixed numbers Multiplying fractions and whole numbers Multiplying fractions and fractions Multiplying mixed numbers Reciprocal Dividing fractions Dividing mixed numbers Simplifying complex fractions Repeating decimals Math Contests School League Competitions Contest Problem Books Challenging, fun math practice Educational Software Comprehensive Learning Tools V Read More Go to Site Front End Estimation Votes:0 Front End Estimation Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Estimating by front end estimation Front end estimation generally produces a better estimate of sums or differences than rounding before adding or subtracting. How to Estimate a difference by front end estimation Subtract the digits of the two highest place values Insert zeros for the other place values Example: 7396 minus 3745 is estimated to be 3600 by front end estimation (i.e. 7300-3700). Return to Top Estimate the Difference by front end estimation? - Is About You have correct and incorrect. This is percent correct Return to Top Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for each correct answer. Play longer by get Read More Go to Site Numbers - Estimating and Rounding - First Glance Votes:0 Home | Teacher | Parents | Glossary | About Us Email this page to a friend --> © 2000-2005 Math.com. All rights reserved . Please read our Privacy Policy . Estimating is an important part of mathematics and a very handy tool for everyday life. Get in the habit of estimating amounts of money, lengths of time, distances, and many other physical quantities. Rounding off is a kind of estimating. To round off decimals : Find the place value you want (the "rounding digit") and look at the digit just to the right of it. If that digit is less than 5, do not change the rounding digit but drop all digits to the right of it. If that digit is greater than or equal to five, add one to the rounding digit and drop all digits to the right of it. To round off whole numbers: Find the place value y Read More Go to Site Round to the Nearest Ten Votes:0 Name_______________________________________________Date_________________________ http://www.rhlschool.com Round Each Number to the Nearest Hundred 1. 935 2. 948 3. 999 4. 369 5. 900 6. 455 7. 610 8. 353 rhl school .com RHL School - Free Worksheets and More Copyright 2000 RHL Answers 1. 900 2. 900 3. 1000 4. 400 5. 900 6. 500 7. 600 8. 400 rhl school .com RHL School - Free Worksheets and More Copyright 2000 RHL Read More Go to Site Round to the Nearest Ten Votes:0 Name_______________________________________________Date_________________________ http://www.rhlschool.com Round Each Number to the Nearest Ten 1. 93 2. 94 3. 99 4. 36 5. 90 6. 45 7. 61 8. 35 rhl school .com RHL School - Free Worksheets and More Copyright 2000 RHL Answers 1. 90 2. 90 3. 100 4. 40 5. 90 6. 50 7. 60 8. 40 rhl school .com RHL School - Free Worksheets and More Copyright 2000 RHL Read More Go to Site Rounding Decimals to Tenths Votes:0 Rounding to Tenths Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding Decimals to the Nearest Tenth Rounding decimals is very similar to rounding other numbers. If the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. For example, rounding 0.843 to the nearest tenth would give 0.8. If the hundredths and thousandths places are fify or more, the tenths place is increased by one. The decimal 0.866 rounded to the nearest tenth is 0.9 Return to Top Round the Decimal Number to the nearest tenth? You have correct and incorrect. This is percent correct Return to Top Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for ea Read More Go to Site Rounding Numbers Votes:0 Rounding Numbers Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding Numbers Rounding makes numbers that are easier to work with in your head. Rounded numbers are only approximate. An exact answer generally can not be obtained using rounded numbers. Use rounding to get a answer that is close but that does not have to be exact. How to round numbers Make the numbers that end in 1 through 4 into the next lower number that ends in 0. For example 74 rounded to the nearest ten would be 70. Numbers that end in a digit of 5 or more should be rounded up to the next even ten. The number 88 rounded to the nearest ten would be 90. Return to Top Round the number to the nearest ten You have correct and incorrect. This is percent correct Return to Top Play Ga Read More Go to Site Rounding to 10000 Votes:0 Rounding to 10,000 Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding to the Nearest Ten Thousand Rounded numbers are easier to work with in your head. They are only approximate. An exact answer can not be obtained with these numbers. Sometimes an exact answer is not required. To round numbers to the nearest ten thousand, make the numbers that end in 1 through 4999 into the next lower number that ends in 0000. For example 54,424 rounded to the nearest ten thousand would be 50,000. Numbers that have the last four digits of 5000 or more should be rounded up to the next even ten thousand. The number 78,988 rounded to the nearest ten thousand would be 80,000. Return to Top Round the number to the nearest Ten Thousand Rounded to the nearest ten tho Read More Go to Site Rounding to Hundred Thousands Votes:0 Rounding to Hundred Thousands Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding to the Nearest Hundred Thousand Rounded numbers are easier to work with in your head. They are only approximate. An exact answer can not be obtained with these numbers. Sometimes an exact answer is not required. To round numbers to the nearest hundred thousand, make the numbers that end in 1 through 49,999 into the next lower number that ends in 00000. For example 6,424,985 rounded to the nearest hundred thousand would be 6,400,000. Numbers that have the last five digits of 50000 or more should be rounded up to the next even hundred thousand. The number 8,988,987 rounded to the nearest hundred thousand would be 9,000,000. Return to Top Round the number to the near Read More Go to Site Rounding to hundreds Votes:0 Rounding to Hundreds Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding to the Nearest Hundred Rounded numbers are easier to work with in your head. Rounded numbers are only approximate. You can not get an exact answer with rounded numbers. Sometimes an exact answer is non needed. To round numbers to the nearest hundred, make the numbers that end in 1 through 49 into the next lower number that ends in 00. For example 424 rounded to the nearest hundred would be 400. Numbers that have the last two digits of 50 or more should be rounded up to the next even hundred. The number 988 rounded to the nearest hundred would be 1000. Return to Top Round the number to the nearest hundred You have correct and incorrect. This is percent correct Return to Top Read More Go to Site Rounding to the Nearest Hundredth Votes:0 Rounding Decimals to Hundredths Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding Decimals to the Nearest Hundredth Rounding decimals is very similar to rounding other numbers. If the thousandths place of a decimal is four or less, it is dropped and the hundredths place does not change. For example, rounding 0.843 to the nearest hundredth would give 0.84. If the thousandths place is five through nine, the hundredths place is increased by one. The decimal 0.846 rounded to the nearest hundredth is 0.85. Return to Top Round the Decimal Number to the nearest hundredth You have correct and incorrect. This is percent correct Return to Top Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for Read More Go to Site Rounding to the Nearest Ten Votes:0 Rounding to Ten Learn Practice Play Explore Feedback Previous Lesson Table of Contents Next Lesson &nbsp Rounding Numbers to the Nearest Ten Rounded numbers are easier to work with in your head. These numbers are only approximate or close to the original number. You can not get an exact answer with rounded numbers but sometimes this is OK. To round numbers to the nearest ten make the numbers that end in 1 through 4 into the next lower number that ends in 0. The number 74 rounded to the nearest ten would be 70. Numbers that end in a digit of 5 or more are rounded up to the next even ten. The number 88 rounded to the nearest ten would be 90. Return to Top Round the number to the nearest ten Rounded to the nearest ten is You have correct and incorrect. This is percent correct Return to Top Pl Read More Go to Site

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