5.NBT.A.2

5.NBT.2. Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote powers of 10.

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Ages: 9 - 13
1799 Views:
Multiplying multi-digit numbers using the standard algorithm
From learnzillion.com, produced by Learn Zillion
This narrated animated video begins by reviewing what a product is, that multiplication is repeated addition, and powers of 10 and place value. The core lesson first presents the problem 512 x 46, as the instructor explains how to solve the problem a... [more]
Found by wendyofoz in 5.NBT.A.2
October 19, 2012 at 01:04 AM
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Ages: 10 - 16
4762 Views:
Metric Unit Conversions
From YouTube, produced by YourTeacher.com
Students learn that in the metric system, all measures of length are based on meters. For example, a centimeter is 1/100 of a meter. And all measures of weight are based on grams. For example, a kilogram is 1000 grams. And all measures of volume are ... [more]
Found by grazianione in 5.NBT.A.2
August 21, 2009 at 12:00 PM
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Ages: 9 - 14
5728 Views:
Decimal Place Value, Part 1 of 2
From YouTube
What is the value of the 3 in 654.213? Mr. Khan, the instructor, uses computer software in this four-minute video for his demonstration. Although he uses different colors for emphasis, the screen is a little 'busy' so the viewer may want to open th... [more]
Found by teresahopson in 5.NBT.A.2
August 18, 2010 at 09:38 PM
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Ages: 9 - 13
482 Views:
Multiplying Whole Numbers by Powers of Ten
From YouTube, produced by Hooda Math Tutorials
The instructor (who is dressed like a pig) demonstrates how to multiply whole numbers by different powers of 10. He explains that the exponent denotes how many zeros to add to the product when multiplying. He provides a pig fact at the end of the vid... [more]
Found by wendyofoz in 5.NBT.A.2
October 14, 2012 at 11:35 PM
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Not Right For WatchKnowLearn
Ages: 5 - 10
5492 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 base-s... [more]
Found by teresahopson in 5.NBT.A.2
May 9, 2010 at 10:40 AM
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Not Right For WatchKnowLearn
Ages: 10 - 15
1704 Views:
Multiplying Decimals by Powers of 10
From dailymotion.com, produced by TenMarks
The instructor provides three problems: (1) .0005 x 10  (2) 2.1005 x 100 (3) 8.9 x 1000. He explains there is only one rule when multiplying decimals by powers of 10: to shift the decimal to the right, and the amount of shift equals the number of zer... [more]
Found by wendyofoz in 5.NBT.A.2
October 14, 2012 at 11:49 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
925 Views:
Multiplying and Dividing by Powers of 10
From YouTube, produced by jimbabweiberg
The instructor uses an interactive white board to show that multiplying a decimal by 10, 100, 1,000, or 10,000 moves the decimal one, two, three, or four places to the right. He displays a calculator to show this as well. He also explains and shows t... [more]
Found by wendyofoz in 5.NBT.A.2
October 15, 2012 at 12:15 AM
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Not Right For WatchKnowLearn
Ages: 9 - 14
511 Views:
Multiplying a Decimal by a Power of 10
From YouTube, produced by Khan Academy
The instructor uses a word problem to demonstrate how to multiply a decimal by powers of 10. The word problem provides the cost of a stamp and asks how much a roll of 1000 stamps would cost. He shows how to move the decimal if multiplying by 10, 100,... [more]
Found by wendyofoz in 5.NBT.A.2
October 14, 2012 at 10:46 PM
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Not Right For WatchKnowLearn
Ages: 10 - 14
413 Views:
Dividing a Decimal by a Power of 10
From YouTube, produced by Khan Academy
The instructor explains how to divide a decimal by power of 10. The problem he works through is: 99.061 / 100. He first shows how to divide the number by 10, and he relates how to move the decimal to the left when dividing. (3:18)
Found by wendyofoz in 5.NBT.A.2
October 15, 2012 at 11:15 PM
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Not Right For WatchKnowLearn
Ages: 9 - 13
409 Views:
Multiplying Single Digit Numbers by Powers of 10
From YouTube, produced by StoneBridgeMath
This video demonstrates what it means to multiply a single digit number by a power of ten. For example, 4 x 10, 5 x 100 or 3 x 1000. This video can be used to build understanding of place value and would be a good precursor to expanded notation.
Found by wendyofoz in 5.NBT.A.2
October 14, 2012 at 10:35 PM
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