4.NBT.2. Read and write multidigit whole numbers using baseten numerals, number names, and expanded form. Compare two multidigit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.
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Ages: 7  11
7168 Views:

Whether you are putting scores in order to figure out who won the game or dates in order for a histor project, being able to order whole numbers is important. These stepbystep strategies from StudyJams will make it a cinch! A short, selfchecking... quiz is also included with this interactive link.
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June 4, 2011 at 08:57 PM


Not Right For WatchKnowLearn
Ages: 8  14
9811 Views:

When Diffy opens, there are four black numbers placed at the corners of a black square. Your first goal is to fill in the four blanks in the blue circles in the middle of each side of the black square.
Start with any side of the black square and cli...ck in the blank in the blue circle on that side and type in the difference of the black numbers on that side (the larger black number less the smaller one). So if the black numbers on the top side of the black square were 7 and 12, we would type 5 (= 12 – 7) in the blue circle between the 7 and the 12.
Note: There are more directions on the right side.
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May 9, 2010 at 11:11 AM


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Ages: 8  12
4476 Views:

A teacher shows students how to add three and four digit numbers with regrouping by using an example of planning the cost of a party. The teacher stresses writing the numbers vertically aligning the digits according to place value. The video also s...hows students how they will make mistakes if the numbers are not aligned. The problems are written with black marker on sheet paper. (03:22)
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September 21, 2011 at 08:43 PM


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Ages: 10  15
4950 Views:

Color Chips
From usu.edu, produced by Utah State University


This virtual manipulative uses plusminus chips to demonstrate adding positive and negative values. Using this virtual manipulative you may: Solve a problem using chips or try a new problem.
May 9, 2010 at 10:57 AM


Not Right For WatchKnowLearn
Ages: 6  9
8195 Views:

Students will learn how to find the value of a digit by determining its place value. User clicks through the two slides.
May 20, 2010 at 02:23 PM


Not Right For WatchKnowLearn
Ages: 8  12
10178 Views:

This video describes and explains some easy steps for comparing and ordering whole numbers. This is a middle school math skill that should be mastered by the sixth grade. (04:42)
March 16, 2010 at 09:11 PM


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Ages: 8  13
6324 Views:

This video indicates it is for prealgebra, but it is good for all levels, beginning, for those who need extra help, or those who need to review. This video is good and contains humor along with the lesson. Reviews what digits are, then goes into wha...t the different place values are. This also contains what the place values are on the other side of the decimal. Then examples are gone through, they also go through the written number (long word form). Video is good quality and good for all students as review or initial learning of the concept.
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July 31, 2009 at 07:47 AM


Not Right For WatchKnowLearn
Ages: 8  14
10002 Views:

Add and subtract decimal values using base blocks. The problems difficulty is controlled by the user. Set the number of whole number columns up to 100s. Set the decimal places from 0 to 3 places. Other bases are available. Please take a few secon...ds to wait for this virtual manipulate (that uses a Java applet) to fully load. From Utah State University.
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May 9, 2010 at 10:16 AM


Not Right For WatchKnowLearn
Ages: 5  10
6951 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: 11  14
6180 Views:

This video introduces whole numbers, place value, expanded form, and writing whole numbers through the billions place. Numerous examples are shown and explained on an interactive board. (A comment not intended for the video is made in the last secon...d of the video). ( 7:35)
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August 20, 2011 at 03:19 PM
