The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

There are 9 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 7 - 11
Order Whole Numbers with StudyJams
From scholastic.com, produced by Scholastic
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 step-by-step strategies from StudyJams will make it a cinch!  A short, self-checking... [more]
Found by begamatt in 1.NBT.B.2c
June 4, 2011 at 08:57 PM
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Not Right For WatchKnowLearn
Ages: 6 - 10
Place Value and Digits
From YouTube, produced by MisterNumbers
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)
Found by Barb in 1.NBT.B.2c
November 16, 2009 at 09:48 PM
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Not Right For WatchKnowLearn
Ages: 3 - 7
Zero and Friends - Zero Singing the Blues
From YouTube, produced by Naomi Halpern
Zero contemplates whether or not he really is a number in this blues duet with his number friend, One. Beautiful pen and ink drawing back ground with animated zero and one cartoon character.  (01:21)
March 13, 2010 at 02:11 PM
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Not Right For WatchKnowLearn
Ages: 8 - 14
Virtual Manipulative - Add and Subtract Decimals With Base 10 Blocks
From usu.edu, produced by Utah State University
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... [more]
May 9, 2010 at 10:16 AM
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Not Right For WatchKnowLearn
Ages: 5 - 10
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 base-s... [more]
May 9, 2010 at 10:40 AM
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Not Right For WatchKnowLearn
Ages: 5 - 8
Adding a 1-Digit Number to a 2-Digit Number
From eduplace.com, produced by Houghton Mifflin
Using tens and ones blocks to model the numbers, students will add a 1-digit number to a 2-digit number.  Begin by adding the ones together, then the tens.  The user clicks through the slides.
Found by tinag1974 in 1.NBT.B.2c
May 20, 2010 at 02:03 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
Building Skills in Addition
From discoveryeducation.com, produced by Discovery Education
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 ... [more]
Found by Anonymous in 1.NBT.B.2c
November 28, 2010 at 06:20 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
Adding Two-Digit Numbers
From YouTube, produced by goldstudent.com
This video provides a brief demonstration of how to add two-digit numbers, using 12+19 as an example. (00:55)
Found by Anonymous in 1.NBT.B.2c
March 25, 2009 at 12:09 PM
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Not Right For WatchKnowLearn
Ages: 6 - 10
Who Wants to be a Millionaire - Numbers to 100
From Slideboom, produced by bcpsmaths
An interactive powerpoint version of "Who Wants to be a Millionaire". It uses questions that test your knowledge of numbers 1-100 and their place values, written representations and more. Lot's of fun for review.
Found by ronna_37 in 1.NBT.B.2c
July 10, 2009 at 07:37 PM
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