2.NBT.B.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

There are 38 videos in this category and 0 videos in 0 subcategories.

Category Videos
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Ages: 7 - 10
6994 Views:
Addition with Regrouping - by StudyJams
From scholastic.com, produced by Scholastic
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 step-by-step, interactive link from StudyJams.  A short, self-... [more]
Found by begamatt in 2.NBT.B.7
June 18, 2011 at 10:32 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
5005 Views:
+ and - Without Regrouping - by StudyJams
From scholastic.com, produced by Scholastic
Addition is really about finding sums, or totals.  Subtraction is about finding the difference between two numbers.  Learn more about adding and subtracting without regrouping with this step-by-step, interactive video from StudyJams.  A short, self-c... [more]
Found by begamatt in 2.NBT.B.7
June 18, 2011 at 10:40 PM
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Not Right For WatchKnowLearn
Ages: 8 - 12
7234 Views:
Multiplication Strategies - Skip Counting, Draw a Picture, Draw an Array, Write a Sentence
From eduplace.com, produced by Houghton Mifflin
Students will learn different strategies to determine the product of a multiplication problem.  Skip counting on a number line, drawing a picture, drawing an array and writing a multiplication sentence are different strategies for finding the product... [more]
Found by tinag1974 in 2.NBT.B.7
May 20, 2010 at 04:12 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
7457 Views:
Subtraction with Regrouping - by StudyJams
From scholastic.com, produced by Scholastic
To find the difference between two numbers, sometimes you have to regroup, or borrow, from another number.  Learn how to subtract using regrouping with this step-by-step, interactive video from StudyJams.  A short, self-checking quiz is also included... [more]
Found by begamatt in 2.NBT.B.7
June 18, 2011 at 10:42 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
4278 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
10544 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: 6 - 11
10915 Views:
Two-Digit Addition With Regrouping/ Two-Digit plus One-Digit Mental Math
From discoveryeducation.com, produced by Discovery Education
In this computer-animated video, students are taught to add two digit numbers using regrouping.  Students are also shown a strategy for adding two-digit and one-digit numbers using mental math. (03:23)
Found by Anonymous in 2.NBT.B.7
November 28, 2010 at 06:55 PM
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Not Right For WatchKnowLearn
Ages: 6 - 10
4557 Views:
Using Addition to Check a Subtraction Problem with 3 Digits
From eduplace.com, produced by Houghton Mifflin
Students will learn to use addition (the opposite of subtraction) to check the difference.  If the sum of the addition problem equals the number you subtracted from, then the answer is correct.  User clicks through the slides. Uses metacognitive stra... [more]
Found by tinag1974 in 2.NBT.B.7
May 20, 2010 at 03:31 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
2924 Views:
Making Change from a Given Amount
From eduplace.com, produced by Houghton Mifflin
Using problem-solving strategies- understand, plan, solve and look back, students will make change from an amount given to them.  Starting from the cost of the item, count coins and bills until you reach the amount paid.  Then count coins and bills t... [more]
Found by tinag1974 in 2.NBT.B.7
May 20, 2010 at 03:53 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
4739 Views:
Adding Two-Digit Numbers Using Mental Math
From YouTube
This video teaches students to add two-digit numbers using mental math and left to right addition ( two column addition).  The problems appear on a white screen and are explained step-by-step by a math tutor. By the end of the video, students learn t... [more]
July 20, 2011 at 10:39 AM
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