CK-12 Foundation
Large Decimal Rounding to Decimal Representations: Weighing a Whale
An interactive challenges mathematicians to round large numbers with help from a large scale that measures the weight of a blue whale. The practie's five questions include multiple-choice, fill-in-the-blank, true or false, and an open...
Curriculum Corner
Rounding Numbers – 100s
Mathematicians prove their proficiency for rounding to the nearest 100 with forty-four flash cards and a activity, each offering an assortment of whole numbers.
Scholastic
Study Jams! Estimate Whole Numbers
Expand on prior knowledge of place value to teach your class how to round whole numbers. This essential skill is explained with the help of a number line before introducing the explicit rules for rounding numbers up and down. Work...
Scholastic
Study Jams! Estimate Sums & Differences of Whole Numbers
Estimating is an essential skill used in everyday life. This presentation explains how to apply prior knowledge about rounding numbers to estimating sums and differences. Example problems and assessment include large numbers, making this...
Curated OER
Rounding Quiz
Pupils round 40 numbers to the place value indicated in parenthesis. Each number is a decimal and everyone must round to the whole number, tenths, hundredths, and thousandths.
Curated OER
Study Buddies: Rounding Whole Numbers
Third and fourth graders work with a coach to round whole numbers to the nearest 100, 1000, and 10,0000. They follow a step-by-step process and notes are provided for the coach.
Curated OER
Rounding Whole Numbers
In this rounding whole numbers worksheet, learners answer five place value questions and round seven numbers to the nearest 10, 100 and 1000.
Alabama Learning Exchange
Are Your Numbers Round?
Elementary schoolers investigate how to round numbers to the nearest tenth. In this number sense lesson, learners view a video clip on the Internet to practice rounding numbers. They use place value charts to help aid in the rounding...
Curated OER
Estimating Solutions to Word Problems
Learners use estimation to determine the answers to word problems by rounding whole numbers. In this estimation lesson plan, pupils compare and contrast solutions using the best answer.
Curated OER
Online Math Worksheet (UK)
Elementary schoolers answer 26 questions regarding greater then and less than and rounding. This worksheet uses the British units of measurement and currency. Pupils can find out if their answer is correct by clicking on the check box.
Curated OER
Rounding Whole Numbers; Estimating Sums And Differences
For this rounding whole numbers and estimating sums and differences worksheet, students problem solve and calculate the answers to forty two mathematical equations.
Beacon Learning Center
Beacon Learning Center: Round About
Students learn about estimation using a number line and rounding rules through this interactive web lesson.
AAA Math
Aaa Math: Rounding to the Nearest Hundred
Students can practice rounding whole numbers to the nearest hundred in a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Rounding to the Nearest Ten
Students can practice rounding whole numbers to the nearest ten through a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Subtraction Using Estimation
This site explains how to estimate differences by rounding. Games and exercises are provided to practice the skill.
Texas Instruments
Texas Instruments: In Round Numbers
In this activity, students will develop and test rules for rounding whole numbers and decimal fractions. They will use the information to solve real-world problems.
Primary Resources
Primary Resources: Rounding Numbers and Estimating
A large selection of teacher resources to help teach and review the concepts of rounding and estimating. There are many worksheets and a few PowerPoint presentations.
Quia
Quia: Hangman Rounding
Don't get "hung up" when you play this old game with a new twist. Simply, round each numbers to the nearest thousand then, find the sum or difference. Knowledge of place value units, where to put the comma, and good computation skills...
Quia
Quia: Decimal and Whole Number Jeopardy
You can use this web site to compare and round numbers and to also practice rounding whole numbers and decimals. You can just play by yourself or with another player! See how many points you can get.
Discovery Education
Discovery Education: Web Math: How to Round a Number
This site provides a description and helpful hints on how to round numbers to any place value. Content also includes an interactive problem solver complete with a full description of how the answer was accomplished.
Khan Academy
Khan Academy: Round Whole Numbers
Practice rounding whole numbers to the nearest hundred or thousand. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
E-learning for Kids
E Learning for Kids: Math: Inca Temple: Three Digit Numbers
On this interactive website students practice various math skills using a real life scenario in a classroom. Those skills include identifying three-digit numbers, putting numbers in ascending and descending order, and rounding numbers to...
E-learning for Kids
E Learning for Kids: Math: Movie Theater: Numbers to 9999
On this interactive website students practice various math skills using a real life scenario. Those skills include using words to show four-digit numbers, putting numbers in ascending order, and relating large numbers to everyday life.
E-learning for Kids
E Learning for Kids: Math: Ice Cream Shop: Roman Numerals
On this interactive website students practice various math skills using a real life scenario at an ice cream shop. Those skills include identifying and converting Roman Numerals, identifying place value in a number, and sorting numbers...