The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
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Ages: 7  10
7946 Views:

Sometimes when you add, you have to regroup, or carry, a group of tens. That is why you need to line up your math problems like a pro. Learn more about addition and regrouping with this stepbystep, interactive link from StudyJams. A short, self...checking quiz is also included.
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June 18, 2011 at 10:32 PM


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Ages: 8  12
7859 Views:

Each digit in a number has a value. That means that a digit's place determines its value. Once you know the place values of numbers, reading any number will be a breeze. Learn more about place value with this cartoon animation from StudyJams. A s...hort, selfchecking quiz is also included with this link.
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June 4, 2011 at 08:50 PM


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Ages: 7  12
5210 Views:

In this video, the instructor uses the Paint Program to review how to add numbers. He starts with singledigit numbers, moves into twodigit and fourdigit numbers, and reviews place value. (08:57)
January 27, 2010 at 02:32 AM


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Ages: 6  10
7070 Views:

Learn Math Digits and Place Value with this fun animated math video. This video is a help to those learning math who want to learn about digits and place value. (02:12)
November 16, 2009 at 09:48 PM


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Ages: 7  12
5621 Views:

Students will learn to use a number line to help round large numbers. If a number is halfway between two 10's, round to the next 10. If a number is halfway between two 100's, round to the next hundred. User clicks through the slides.
May 20, 2010 at 03:43 PM


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Ages: 5  10
5489 Views:

Chip Abacus
From usu.edu, produced by Utah State University


With this manipulative, you can represent place value and exchanges in base 2, base 5, or base 10. Set the desired base with the up and down arrow buttons below the workspace. Chips in columns then represent units (1), bases (2, 5, or 10), and bases...quared (4, 25, or 100), as indicated by the numbers at the top of each column.
Note that chips can be dragged within a column but not from one column to another.
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May 9, 2010 at 10:40 AM


Not Right For WatchKnowLearn
Ages: 6  12
4997 Views:

Base Blocks Addition – Use base ten blocks to model grouping in addition. This manipulative uses a Java applet.
May 9, 2010 at 10:13 AM


Not Right For WatchKnowLearn
Ages: 6  9
4320 Views:

Using a place value work mat, students will learn to determine the value of a digit. To find the value of a digit, find the value of its place.
May 20, 2010 at 03:24 PM


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Ages: 7  12
3313 Views:

Khan Academy Present a word problem with cookies (13:06) Sal Khan uses computer software and different colors for demonstration.
June 7, 2011 at 06:17 PM


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Ages: 7  10
3079 Views:

In this video, students review place value up to the hundreds place. Then, they are given a series of numbers and must identify the number of digits and how many are in each column of hundreds, tens, and ones. They also practice writing numbers from ...place value clues. (6:12)
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November 28, 2010 at 06:20 PM
