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Does not work with decimal numbers - Aaron

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Place Value...why use columns???

How does a number move to the tens column from the units? Where does the zero come from? Is it magic? is 1.1 x 10 = 1.10 or 1.01

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Is a short cut but not necessarily the best way to teach the concept

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I disagree. This doesn't work with decimals

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I disagree. This doesn't work with decimals

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Also because of the fact that it doesn't work with decimal numbers. It's a trick and gives children no mathematical understanding of what is happening to the number.

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It only works with integers. It is important to define the types of numbers

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To multiply by 10, you move the decimal one digit to the right. A zero is added to hold the place value only IF your original number is a positive whole number. The added zero is an easy way to remember what it looks like but isn't what actually happens.

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I strongly disagree. If you add 0 to a number, you get the same number!!!!!

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I strongly disagree. If you add 0 to a number, you get the same number!!!!!

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5 add zero = 5
5x10 = 50 which is where the zero comes from.

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zero times 10, still 0.

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Can work with whole numbers but doesn't show understanding of value

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Neutral: Works with non-zero integers. What about decimals, fractions and 0?

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Neutral: Works with non-zero integers. What about decimals, fractions and 0?

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because of the way it is written. If you add 0 to 6, you  get 6. 6+0=6 NOT 60. This statement does not provide any explanation about what is happening when a 0 ends up on the end of a number when multiplying by 10.
The statement needs to be rewritten to include something about WHY there is a 0 being "added" to the number.

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I disagree as this method only works with integers. (assuming that 'add zero' means to write an additional zero after the number)
Therefore, this statement needs greater clarity or changed completely to reflect conceptual understanding.

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The statement works with integers, if you read it as "adding a zero to the end of the number," as just placing the digit behind the existing numeral. However, it does not work for decimals, and shows no deeper understanding of what multiplication actually is.

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no conceptual understanding

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This method works with integers only...

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This is a widely misinterpreted 'shortcut' but clearly if you "add zero" to ANY value it remains the same

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add zero?

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This strategy 'works' but it is a form of rote memorisation. It isn't showing an understanding of place value, how it works/why it works.

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When you "add zero" the number doesn't change. 5+0 is still 5.

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Strongly Disagree

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Adding zero would mean to put two numbers together and get a sum. For example, if you add zero to the number 5, it would still be 5.

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Disagree. Works in a limited range of situations.  Positive integers ok. Not good for other rational numbers

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Disagree. Works in a limited range of situations.  Positive integers ok. Not good for other rational numbers

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Adding a zero don't kick no decimal place along, you want to multiply you have to move the place value

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Adding a zero don't kick no decimal place along, you want to multiply you have to move the place value

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Doesn't work with decimals and fractions. Teaching rules and tricks without understanding misleads.