2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

There are 19 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 7 - 12
4107 Views:
Addition 3 (Introducing Carrying) - Khan Academy
From YouTube, produced by Salman Khan
In this video, the instructor uses the Paint Program to review how to add numbers. He starts with single-digit numbers, moves into two-digit and four-digit numbers, and reviews place value. (08:57)
January 27, 2010 at 02:32 AM
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Not Right For WatchKnowLearn
Ages: 7 - 10
10340 Views:
Subtraction 3: Introduction to Borrowing or Regrouping - Khan Academy
From YouTube, produced by Sal Khan
In this video, the instructor uses a graphics program to review how to subtract numbers and introduces how to re-group or borrow. The instructor also uses a number line. The video is suitable for elementary students. (18:26)
January 27, 2010 at 02:51 AM
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Not Right For WatchKnowLearn
Ages: 8 - 12
3819 Views:
Counting Money
From YouTube, produced by Isabel Gutierrez
This is a video about a girl that goes to a store and needs to know if she has enough money to buy various items. The girl says how much the things she wants cost and how much money she has. There are some things she can buy and some she can't.
Found by Anonymous in 2.NBT.B.5
July 23, 2009 at 01:45 PM
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Not Right For WatchKnowLearn
Ages: 6 - 11
3292 Views:
Adding Three 2-Digit Numbers
From eduplace.com, produced by Houghton Mifflin
Students will learn to use their knowledge of place value and addition facts to add numbers.  First look for 10s and doubles. Add the ones first then add the tens.  User clicks through the slides.
Found by tinag1974 in 2.NBT.B.5
May 20, 2010 at 02:43 PM
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Not Right For WatchKnowLearn
Ages: 8 - 14
3199 Views:
Addition Techniques
From YouTube, produced by Lawrence Perez
This video indicates it is for pre-algebra, however this would be good for anyone who is reviewing or learning place value. This video has humor, which helps make the lesson fun. Video shows how to use the number line, shows how to use the number lin... [more]
Found by Barb in 2.NBT.B.5
July 31, 2009 at 08:00 AM
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Not Right For WatchKnowLearn
Ages: 7 - 11
2174 Views:
Basic Addition
From YouTube, produced by www.mathwithlarry.com
Lesson on basic addition with Larry.  This is two part lesson.  Larry shows the basic idea behind addition with an example problem on a white board using a number line and another problem not using a number line.  Larry shows some tricks in solving a... [more]
May 4, 2010 at 07:08 PM
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Not Right For WatchKnowLearn
Ages: 7 - 11
1991 Views:
Subtraction Word Problem
From YouTube, produced by Sal Khan
In this five-minute video, Sal Khan solves a word problem with 3-digit numbers. Mr. Khan, of Khan Academy, uses computer software for demonstration.
July 18, 2011 at 06:18 PM
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Not Right For WatchKnowLearn
Ages: 5 - 8
3464 Views:
Subtract Two-Digit Numbers
From eduplace.com, produced by Houghton Mifflin
Using tens and ones blocks to model numbers, students will subtract two 2-digit numbers.  Begin by subtracting the ones place then the tens place.  User clicks through the slides.
Found by tinag1974 in 2.NBT.B.5
May 20, 2010 at 02:06 PM
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Not Right For WatchKnowLearn
Ages: 7 - 11
10034 Views:
Using Addition to Check Subtraction
From eduplace.com, produced by Houghton Mifflin
Students will learn to use addition (the opposite of subtraction) to check the answer to a subtraction problem.  If the sum of the addition problem equals the number you subtracted from then the difference is correct. User clicks through the slides. ... [more]
Found by tinag1974 in 2.NBT.B.5
May 20, 2010 at 02:52 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
1798 Views:
Subtraction Across Zeros
From YouTube
In this video, a student shows how to subtract with regrouping using place value manipulatives.  The student explains the problem step-by-step, writes the problem, and shows the problem with manipulatives. (01:34)
July 30, 2011 at 01:02 PM
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