1.NBT.C.4

Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, 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 and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

There are 42 videos in this category and 0 videos in 0 subcategories.

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Ages: 7 - 10
6884 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 1.NBT.C.4
June 18, 2011 at 10:32 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
7366 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 1.NBT.C.4
June 18, 2011 at 10:42 PM
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Not Right For WatchKnowLearn
Ages: 6 - 10
6173 Views:
Comparing Numbers to 50 Using Greater Than and Less Than
From eduplace.com, produced by Houghton Mifflin
Using two numbers, students will compare the numbers to determine if it is less than or great than.  Remember, the greater than/less than symbol points to the smaller number. User clicks through the slides.
Found by tinag1974 in 1.NBT.C.4
May 20, 2010 at 02:10 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
4178 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: 5 - 9
3739 Views:
Count and Represent Numbers 0-31
From eduplace.com, produced by Houghton Mifflin
With the help of a ten frame and a 10 train, students will learn how to represent 2-digit numbers.  The tens frame and train teach students to count the tens and use 10s as benchmark numbers.  This is also interactive; you must click on the arrows on... [more]
Found by tinag1974 in 1.NBT.C.4
May 14, 2010 at 01:08 PM
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Not Right For WatchKnowLearn
Ages: 7 - 10
10425 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
10837 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 1.NBT.C.4
November 28, 2010 at 06:55 PM
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Not Right For WatchKnowLearn
Ages: 6 - 10
4472 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 1.NBT.C.4
May 20, 2010 at 03:31 PM
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Not Right For WatchKnowLearn
Ages: 6 - 9
6336 Views:
More About Place Value With Tens and Ones
From eduplace.com, produced by Houghton Mifflin
Students will learn how to find the value of a digit by determining its place value.  User clicks through the two slides.
Found by tinag1974 in 1.NBT.C.4
May 20, 2010 at 02:23 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
4661 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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ehommeland on 08/07/2012 03:10 PM wrote:

HELP! Clicking NEXT link produces an error, can't get past first 10 in this list (happening on several pages) 08/07/12

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